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Identity HelpPlease your help to identify this blue crystal

26th Feb 2020 13:50 GMTJORGE ESTRADA

01194290015827247756726.jpg
Long: 7.50 cms
Wide: 5.97 cms
Height: 6.12 cms
Weight: 410 grs
Gravity: 2.56 (I used a non digital scale)

Location Hong Kong, Mountain hill close to a river.

Translucent Crystal covered by Sediment and sea shells. No bubbles, mostly blue with spots on light blue and light green

Looks blue with Natural daylight and gets opaque and greener with artificial light.

Cant check reflections.

Could you please help me to identify?

26th Feb 2020 13:51 GMTJORGE ESTRADA

05291930015827250757643.jpg
Angle 2

26th Feb 2020 13:52 GMTJORGE ESTRADA

06371240015827251371362.jpg
Angle 3

26th Feb 2020 13:53 GMTJORGE ESTRADA

02649910015827251763916.jpg
Angle 4 

26th Feb 2020 13:53 GMTJORGE ESTRADA

07103780015827252157818.jpg
Angle 5 

26th Feb 2020 17:39 GMTDaniel Bennett

another guess is chrysoprase. the color looks close. I think the gravity would be about 2.6

26th Feb 2020 16:35 GMTDonald B Peck Expert

Jorge, My first thought is that you have an eroded piece of beryl, but we need a little more information.  Will your mineral scratch glass (a bottle or piece of window glass)?  If it does, can you find a piece of quartz?  Will it scratch your mineral?  If it will not, you probably have beryl. If the quartz scratches the mineral, but with great difficulty, will the mineral scratch the quartz? With moderate or great difficulty?  Moderate difficulty: you probably have beryl.  Great difficulty: you probably have quartz.  I think it is probably beryl.

26th Feb 2020 16:44 GMTcascaillou

Fluorite I quite think (surface cleavage near broken angles would be a good indication, for instance look for such at that 'angle 4' area)

26th Feb 2020 17:17 GMTJosé Zendrera Expert

Did you check fluorescence under UV?
Did you check hardness as proposed by Donald?


27th Feb 2020 12:17 GMTJORGE ESTRADA

No it is not fluorescent one.

26th Feb 2020 17:55 GMTcascaillou

Everything in that stone screams fluorite: the intense bluish-green color with great translucency, the color zoning associating different shades of green, the flat planes here and there suggesting cleavage...moreover I just checked, there are indeed several Pb/Zn mines with fluorite in the area. 

27th Feb 2020 12:19 GMTJORGE ESTRADA

Thanks a lot for taking the time to check the source, appreciate it man. This rock does not have sharp edges, looks like a consumed candle.

26th Feb 2020 22:11 GMTPaul Brandes Manager

If the specific gravity was done correctly, it is far from the proper density for fluorite. Granted, it does have other rock on it that would skew a reading.

Jorge: it is imperative that you get a hardness reading from this specimen. ID strictly from a photo can be challenging and while you provided some information, a hardness reading would help us greatly.

26th Feb 2020 22:47 GMTcascaillou

Indeed, I'm assuming the given specific gravity value to be wrong

27th Feb 2020 03:17 GMTVicki Ribal

It’s very cool!

27th Feb 2020 12:19 GMTJORGE ESTRADA

Thanks a lot! 

27th Feb 2020 12:11 GMTJORGE ESTRADA

08134630015828054905909.jpg
Hey guys, thank you so much for helping me out, by checking the 3 options, chrysoprase, beryl and Fluorite all of them make sense actually.

This is the scratch analysis:

Rock was able to scratch quartz however was a little challenging because it doesn’t have sharp edges so I had to put some pressure on it but I could say, cutting was not that difficult.

When I tried to cut the rock back and even quartz edges were very sharp, they’ve gotten broken. I could say there was maybe almost no damage or very minimal to the rock.

Regarding the specific gravity, this is what I did:

Weighted the rock = 410 grs
Put on scale container with water = 1300 grs
Rock weight under the water = 1460 (160 grs)
Gravity 410 / 160 = 2.5625

Is this correct?

I believe this rock is not Fluorescent see picture.

But there is something that caught my attention, i think I saw just in one spot some light brown dots inside.

29th Feb 2020 14:28 GMTBrian Fussell

Could you hold the UV light further away from the rock and re take the image? and when you are observing it in person with the UV light on it does it appear blue or purple or any other color?

3rd Mar 2020 21:10 GMTDaniel Bennett

rock weight under water=1460(160grs)

this is correct if you mean rock weight (suspended by a string) under water.

 this test wont help much since chrysoprase and beryl have similar density.I don't think chrysoprase would be able to scratch a quartz crystal so I will have to agree with beryl. unless it didn't scratch it but only left a mark that wipes off.

27th Feb 2020 12:12 GMTJORGE ESTRADA

02223180015828055534577.jpg
Quartz before 

27th Feb 2020 12:13 GMTJORGE ESTRADA

02254050015828056012764.jpg
Quartz after horizontal scratch, (top left middle section)
Vertical scratch (bottom middle right section) was also made by the rock.

27th Feb 2020 12:16 GMTJORGE ESTRADA

04980780015828056464012.jpg
This is what got my attention, can you see the small dots? I looked all over the rock and is just on this place where I found them.

By the way how can I safely clean the rock from the sediments? And would be a good idea? 

27th Feb 2020 14:05 GMTHarold Moritz Expert

Color, fracture, hardness, luster, transparency, non-fluorescence all say beryl, the measured SG is a little light, but the piece has other, less dense minerals and stuff on it. Too hard for fluorite, which should fluoresce and probably not survive loose and semi-rounded like this piece has (waves would bust fluorite up pretty quick cuz of the cleavages). You can safely put it in dilute HCl to get rid of the shells, and ammonia or bleach to get off the organic matter. I know nothing about the geology there, is this a piece of gem rough that fell off a boat??

27th Feb 2020 15:06 GMTJORGE ESTRADA

Hey Harold, thanks for the analysis. There is actually a Beryl mine at Devils Peak, blue beryl by the way. Limited production and closed in 1959.
If this is Beryl and based on the rock’s condition, it might be around for long time. 

27th Feb 2020 14:08 GMTAlfredo Petrov Manager

Note that beryl is more likely to survive the rigors of a beach environment than fluorite would.

27th Feb 2020 15:08 GMTJORGE ESTRADA

01303090015828160067412.jpg
Thanks Alfredo, makes sense actually. This is how I found it.

27th Feb 2020 18:44 GMTcascaillou

Could you try the following:

-Try to scratch a flat piece of glass (such as a mirror) with your stone (but make sure that only the blue-green material touch the glass, not the associated mud/matrix.  It is of course easier to get a scratch on glass if using a sharp angle of your stone rather than a rounded part).
Also, to make sure that what you obtained is indeed a scrath (rather than a streak): scratch the obtained scratch with your fingernail, a scratch should 'catch' your nail a bit (while a streak, which is just a thin line of powder on the glass, shouldn't).
If it does scratch glass, does it scratch it easily or does it require significant pressure?

-proceed to specific gravity measurement as described in the following article, but using the 'Suspension technique' which is described at the very end of the first post:
However, considering the large size of your stone, you could use any kind of thin string to suspend the stone (some sewing thread for instance would do, if you don't have fishing line on hand).

-Besides, while my first impression was fluorite, I had also considered the possibility that it could be a glass slag (due to the intense color and variations of color shades through the stone), and the white balls inclusions seen in your last picture could indeed be devritrification figures as found in some glasses. Are you sure there aren't any bubbles included inside the material: under strong incident lighting, use a loupe to check for inclusions in transparent parts of the stone (presence of bubbles would indicate glass, but glass can also be free of any bubbles).
Notably, with the loupe, check if the very tiny dots in your last picture could be very tiny bubbles (incident lighting is good for that since it makes the bubbles smooth surface shine, which is a good way to separate bubble inclusions from rounded crystal inclusions).

28th Feb 2020 15:03 GMTJORGE ESTRADA

Hey man, thank you so much for taking the time and replying back with these detailed recommendations

Regarding the scratching point, I did and was like cutting butter, even this rock does not have sharp edges, every single part of the blue material was able to scratch the mirror with minimum effort and just to be completely sure, I used a piece of glass slag and funny man, I couldn’t make a significant mark on the mirror.

Second, at this moment I am cleaning the rock based on Harold’s recommendations and as soon as I remove all the extra material, I’ll run another SG Test. I’ll keep you on the loop of course.

Third, Positive no bubbles and trust me it is not glass slag, I do have a nice piece by the way and structures are very different, I’d say that waxy luster and meaty content of the blue rock are the most important differences but I’m with you, not sure what inclusions are. As soon as I get the rock cleaned, I’ll perform another review.

Last but not least, does anybody know if blue Beryl and aquamarine are the same thing? If not what are the differences?

Thanks in advance.

28th Feb 2020 16:28 GMTDavid Carter

JORGE ESTRADA  ✉️

Last but not least, does anybody know if blue Beryl and aquamarine are the same thing? If not what are the differences?

Pure Beryl itself is colourless, but a wide range of impurities cause the diverse amount of colours and the many varieties of Beryl. Whilst Beryl is naturally transparent, inclusions may also make it opaque. Aquamarine is the name given to greenish-blue to blue varieties of Beryl and the blue colour is caused by ferrous iron, attributed to Fe2+ ions. However, Aquamarine can range quite widely in colour from a faint light blue to blue and bluish-green, with lighter coloured stones being the more common type. Also, interestingly light green Beryl can be transformed into Aquamarine if heated to 750º F (400º C) and the green hues in most Aquamarine can also be removed through heat treatment! There is also a deep blue version of Aquamarine, called Maxixe, although that is more commonly found in Madagascar. 

The purity of colour of gem quality Aquamarine material is obviously important, but to a lesser extent generally with Aquamarine gemstones where their value is much more dependent on clarity and depth of colour, in comparison to other gemstones where colour purity is key.

29th Feb 2020 11:36 GMTJORGE ESTRADA

Hey David, appreciate the explanation, you know by checking the internet I couldn’t find anything similar to what you just described, thanks a lot. 

28th Feb 2020 16:36 GMTcascaillou

OK, then try scratching a flat and smooth piece of quartz (such as the facet of a quartz crystal, or a piece of quartz that has been polished) with the blue material (indeed, it's best if the mohs reference material such as quartz has a smooth and even surface).
If it does scratch quartz, does it scratch it easily or does it require significant pressure? 


By the way, glass slags can show a whole diversity of appearances, here are a few pics (note the devitrification inclusions in the last four):

29th Feb 2020 11:40 GMTJORGE ESTRADA

Hey man, requires some effort actually but at the end blue rock is able to scratch quartz.
You know is very nice speaking with experts and nature is amazing. It is fantastic how rich Mother Earth is. I can’t imagine how does it look a few miles down there.

29th Feb 2020 03:03 GMTHarold Moritz Expert

I doubt your piece is slag, which is essentially a glass. Glass is brittle and soft and in a high energy environment (beach) it gets busted up and acquires a frosty surface very quickly - here on the Atlantic coast it is called "beach glass" (mostly from broken bottles), but beryl is a lot tougher and that doesnt happen to it. This piece hasnt been very rounded so hasnt been transported far, very rare to find a piece of beryl this way (simply because volumetrically beryl is pretty scarce) unless the source is close. I've dug a lot of beryl and this looks like the real deal.

29th Feb 2020 12:00 GMTJORGE ESTRADA

Thank you so much Harold that is very encouraging and I do really value all your opinions, apréciate it. 
Actually you guys gave me the confidence to make the next step, which is look for a lab to run a formal test and today I spent most of my Saturday looking for one, unfortunately was closed but hopefully this coming week I’ll get sone conclusions.
Trust me, find this piece took me weeks, I’d say there was a lot of sweat, some research and definitely a lot of luck.
not sure Harold what the lab’s results could bring up but doesn’t matter. I love the mineral hunting and of course sharing my findings and learn from very smart people! 
Give me a few days and I’ll publish the results. 

29th Feb 2020 12:02 GMTJORGE ESTRADA

05466870015829776474740.jpg
Still work in progress but getting there, so far no bubbles found. But there is a little quartz layer on top which I think is affecting the SG test.

29th Feb 2020 12:05 GMTJORGE ESTRADA

06957230015829778764375.jpg
Clean up angle 2

29th Feb 2020 14:27 GMTHarold Moritz Expert

Cleaned up nicely, great color. Is that a garnet (red) I see in last photo?

29th Feb 2020 14:32 GMTJORGE ESTRADA

Thanks man, no it is not, still some sea stuff. 

29th Feb 2020 15:14 GMTcascaillou

Now that the specimen is cleaned, I must say that it doesn't look like a slag.

It can't be fluorite since it scratched glass, and I've also been considering Apatite but that sounds unlikely since you said that it cuts into glass very easily.

By the way, in your last pic ('angle 2') I can still see that very flat and smooth broken plane (of vertical orientation, near the top of the stone) which had me thinking of cleavage.. 

Do you have a piece of quartz with some smooth and even surface (such as a quartz crystal, or a polished piece) which you could try to scratch with your blue stone?

1st Mar 2020 17:27 GMTDonald B Peck Expert

Up near the top of the thread, there is a photo that shows a scratch that Jorge made in a piece of quartz.  To me, it looks like it dug in pretty well.
I still think the mineral is beryl (variety: aquamarine).

Don

2nd Mar 2020 11:44 GMTJORGE ESTRADA

06585300015831494777752.jpg
Hey Cascaillou, sorry for the delayed response.
Even I had done the scratch test in a quartz, I tried in a better piece and man, was very difficult and I scratch was not that that deep.

2nd Mar 2020 11:47 GMTJORGE ESTRADA

02910510015831495072344.jpg
One of my favorites, I found it a few steps from the Beryl mine at Devil’s Peak HK.
This one I used it for the scratch test. By the way I showed it to the Lab girl and immediately identified it and suggested take it away.

2nd Mar 2020 11:51 GMTJORGE ESTRADA

Anyway, I took the blue rock to a Gem Lab and guys even I used my best smile, best attire and dating lotion, I simply couldn’t take any sign from the Lab girl about what potentially could be.
For questions like “Based on your experience this could be ....”
“Have you got something similar”
“Luster make it look like Aqua, right”
“Between you and me, what is it”

The response was, “I can not comment until we get the results” “Could be made of multiple materials”

In my desperation I asked “does it worth spend money on it” she said “up to you” 

Not sure what was my face and then she smiled and said, “Listen, even for decoration a certificate increases value across collectors , you’ll be ok”

By the way Certificate looks very fancy.

So my friends, stay tune, results will take one week, I’ll let you know what is it.

Quick note, she said is green but I see it blue, I told her but she insisted that was green.

2nd Mar 2020 14:12 GMTcascaillou

I have to agree with Donald that beryl is a good candidate then.

As a side note: don't damage your favourite quartz find by using it as scratch test reference material!
Personally, I use 5cm sized polished plates of fluorite, apatite, feldspar and quartz, which makes hardness testing much easier (thanks to flat, smooth and even surface).

2nd Mar 2020 14:58 GMTJORGE ESTRADA

Thanks man, no worries I selected a hidden spot so still looking very nice.

By the way, I do really appreciate all your suggestions so lets see. Feeling positive after getting all of your valuable opinions.

2nd Mar 2020 21:12 GMTHarold Moritz Expert

Precision hardness test kits are available, with nice pointy, machined tips for each hardness level. Much, much easier, accurate and reliable to test this way than by rubbing two rocks together! Just search the web. Cost about $100.

3rd Mar 2020 14:11 GMTJORGE ESTRADA

Thank you Harold, I’ll check it out. I’m definitely becoming very engage to the mineral hunting and I’ll get one set.  

2nd Mar 2020 21:44 GMTKeith Compton Manager

Jorge

I see the colour as green not blue. In fact if I was a writer I'd describe it as "sea foam green".

I'm also with Harold's suggestion of purchasing a hardness kit.

Certainly looks as if it could be beryl and if from Hong Kong possibly from the abandoned Devil's Peak mine not far from Victoria Harbour, (I think this area is now a cemetery) although there are a couple of other former mine sites in Hong Kong that have produced beryl.

Your description of where you found it is not very helpful as an aid: "Hong Kong, Mountain hill close to a river".



3rd Mar 2020 14:09 GMTJORGE ESTRADA

Hey Keith, yes I think you are right and that’s an excellent way to describe it. Thanks man!

3rd Mar 2020 14:02 GMTJORGE ESTRADA

05466870015829776474740.jpg
Rock exposed to sun light

3rd Mar 2020 14:04 GMTJORGE ESTRADA

00730370015832441805267.jpg
Same angle with artificial light and looks very different. Is this a normal characteristic for a Beryl? 

Do not pay to much attention to the external layer, I was removing the sediment and took that color.

3rd Mar 2020 15:42 GMTcascaillou

A few words about hardness testing:

The problem with hardness testing points is that these are meant to scratch your unknown stone, which causes damage. I rather use polished plates of the mohs hardness minerals which I will scratch with the unknown, thus causing damage to the testing plates rather than to the unknown (provided that you work your way up progressively so you won't end up trying to scratch a testing plate with an unknown of significantly lower hardness, which can be damaging to the unknown). 

Moreover, hardness points are expensive, while polished mineral plates can be acquired very cheap from nearby rockshops. And anyway, if you have polished plates, any sharp angle in the plate (if none, just break a tiny piece in a corner of the plate) will actually serve as a testing point!

In the end, testing points will only be helpful when you absolutely need more accurate hardness data to positively identify your unknown (which is rarely necessary since other observations and other testings than hardness should provide useful information too). For instance, let's say you have an unknown which scratched the polished fluorite plate but not the apatite plate, then you know that its hardness is lower than 5 but higher OR equal to 4 (indeed two materials of the same hardness can scratch each others), which is usually enough accuracy for identification. But in the case you would want to know whether it is higher or equal to 4, then you'll need a hardness 4 point: if that point scratches your unknown, then that means your unknown is precisely 4 Mohs, if it doesn't that means your unknown is strictly higher than 4 and strictly lower than 5, which can be simplified as roughly 4. 5 Mohs. 
But as said, for identifying an unknown, you rarely need such accuracy in the hardness value. 

Anyway, when you find an interesting unknown, it's always a good idea to collect a few additional low quality pieces of the same stuff which you will then use for the destructive testings (such as hardness testing, acid test, chemical analysis..) or for testings that wouldn't work in the presence of matrix (such as specific gravity measurement). 

At last, let's note that when performing hardness testings, it's always good to make sure than the obtained scratch is indeed a scratch, and not a streak (since a material of lower hardness may leave a streak over a material of higher hardness, which should not be confused with a scratch). This can occasionally get newbies a little confused, so here are two good practices to make sure:
-slightly humidify your finger tip with a tiny bit of saliva, and vigorously rub the obtained scratch with your finger tip. A scratch will remain visible (especially after the saliva will have dried), while a streak should be wiped off.
-then try to scratch the obtained scratch with you finger nail (perpendicularly to the scratch direction): a scratch should catch your fingernail a bit (since it's a groove into the material, while a streak either shouldn't or will feel as a thin bump).

4th Mar 2020 01:26 GMTHarold Moritz Expert

Hardness testing can certainly be done with testing plates, but such method is unreliable if not done very carefully.  If you dont do it well and unknowingly get the wrong value it will only cause confusion with other observations. When I use a machined hardness point I do it while viewing under a binocular microscope on a hidden place on the specimen so small you would barely see it naked eye. The points are that precise, and you can easily test multiple individual grains and minerals in one specimen, if necessary. You just cant do that with a hardness plate. Plus, with magnification you can very readily tell whether the point leaves a metallic streak on the mineral (is softer) or creates a tiny scratch in the mineral (is harder), or both happen (they are equal). Thus you can reliably tell the hardness down to a half increment. Yes kits are not cheap, but you get what you pay for - simplicity, reliability, accuracy, with very minimal damage.

4th Mar 2020 13:09 GMTcascaillou

Well I hadn't considered working with points under the microscope so that the scratch is so small that it is invisible. That makes sense.

6th Mar 2020 12:50 GMTHarold Moritz Expert

I'm just frustrated by the many "help with ID" posts that have none or poor data, especially poorly done hardness tests that obviously conflict with the other info. I'm not expecting the casual collectors who post those requests to run out and spend $100 for a kit on one specimen (almost always quartz). I just usually disregard the hardness info, because as you rightly point out, it is easy to do wrong (see Jolyon's recent "Do I have a diamond?" flow chart post). If a poster shows as serious interest in more collecting or getting to the bottom of a potentially worthwhile piece like the one in this thread, then I suggest getting a kit. I think there is a good mindat article on hardness testing already.

6th Mar 2020 19:08 GMTFrank K. Mazdab Manager

and yet for some reason, I still seem to prefer those ID requests where the uploader says, "I tried the _______ test and got a value of ___" (even if they did the test wrong and the value is misleading), to those ID requests where the nature of the request implies, or sometimes even explicitly says, "I didn't do any tests".

While the former might ultimately make the ID tougher by leading us down the wrong rabbit hole, the latter suggests a lack of interest that makes me wonder, "if the poster isn't really that interested enough to help us, why should we be that interested to help them?" But yet still, I prefer the effort of the former to the nonchalance of the latter.

Sometimes I really wonder when some uploaders post blurry photos of rounded pebbles with no accompanying information if they genuinely think there must only be 3 or 4 different kinds of minerals and it should be obvious to us "experts" which one of those limited choices their photo shows? Maybe they feel there's no need to offer any useful info to help us?

So here I applaud Jorge's initial post, which included a mix of useful (S.G.; color; location) and not-so-useful (dimensions and weight, although under ideal circumstances one could calculate a density from that) data, but at least there were data included! But I will add, that once someone suggested the unknown could be beryl, Jorge perhaps should have mentioned a bit earlier in this thread that there's a nearby beryl mine in Hong Kong (most of us scattered around the world likely aren't very familiar with Hong Kong geology); that added info, which finally got mentioned 5 days later, probably would have resulted in this thread being a lot shorter... :-)

8th Mar 2020 03:32 GMTJORGE ESTRADA

Hey Harold/Frank and of course Cascaillou, you guys are awesome and doing a fantastic job not just here even with other posts thank you so much!
Trust me I know what you are talking about, I’m an IT guy and when a get a support request like  “Jorge the system doesn’t work’ man I have to spend a lot of time trying to realize what happened.
From my side, I’m  getting there and hopefully become more engaged and get some geology basic equipment.  
By the way guys, I’m in a project assignment in HK but I live in Texas. Planning to explore and hunting minerals when I get back!
Frank, to be honest I did not want to share the Beryl mine information from the beginning, looking to get feedback just based on the rock characteristics.

8th Mar 2020 04:06 GMTFrank K. Mazdab Manager

Hi Jorge,

more detailed locality and geologic environment information, like noting the existence of a nearby beryl mine, can actually be a very powerful identification hint.

For example, if you told us you found a suspected diamond, most of us would probably smirk. But if you further elaborated that you found it at Crater of Diamonds State Park, or that you found while panning gravels in the Orange River (keep that a secret... that might be illegal... lol), we might reconsider our smirk and admit it's not impossible... the local geology in both of those places wouldn't be at odds with finding diamonds (although diamonds are still rather rare!)

But if you told us you found it on the beach in Florida, we'd wonder who's engagement ring you found, because that's the only diamond you'll find there. Hong Kong geology is probably unfamiliar to most of us, so the combo [rocks that might host beryl] + [Hong Kong] may not be on many of our radars.

As an IT guy, I'm sure you'd similarly appreciate that if I called you up and asked you how to locate a certain file on my Mac, if it didn't take me too long to further elaborate that my Mac was a Mac II from 1988, before you spent all your time explaining modern MacOS 10.15 file structures to me... lol  (Note: for future reference when I ask Jolyon why mindat behaves odd on my computer, no, I am not trying to access mindat on a Mac II... lol).

8th Mar 2020 04:17 GMTJORGE ESTRADA

Hey Frank thanks man,  you know I did not think about that.

My IT skills are more focus on e-commerce software like Hybris and salesforce. 
But send me a private message pls. 

8th Mar 2020 10:39 GMTKeith Compton Manager

Jorge

Well I think we have established this as a beryl.

But as indicated above it would have been better to have included more info on where it was  found in the original request. And this we ask of all mindaters for any ID request as this can help in so many ways - either by including or excluding so many minerals.

It also seems that you may have erred in the SG - so you might want to retry. I use either a single strand of cotton or fine dental floss.

When weighing the specimen in water - ensure that it is suspended - admittedly there is some other material on the specimen that may affect it but presumably the "barnacles" are no longer there.

9th Mar 2020 12:30 GMTJORGE ESTRADA

Guys, I'm completely confused and I need a little help.

I've been chasing the HK Lab Gem (recognized internationally) since last Friday, they said Gemologist was performing some testing.

Today morning HKT they said a professor and a gemologist were working on it.

At 6:15 am CST they said they need to send the rock to the HKU for additional testing. (Appointment is mandatory for reaching the HK University)

Since I was so insisting on getting feedback from the testing already performed and looking for a tentative identification, she said that tentative is Glass.

But honestly and seriously guys, rock left a deep scratch in a mirror, minor scratch in quartz and definitely does not look like glass.

Guys, can an expert Gemologist identifies glass easily?

or simple theory, they have not done anything :D but again, these guys are pro.

Your feedback will be highly appreciate it.

9th Mar 2020 15:35 GMTDonald B Peck Expert

I would bet on "not done anything", or comment from someone who is involved in mineral rough.

9th Mar 2020 15:40 GMTJORGE ESTRADA

Probably! Which is very disappointing actually. My expectations were a lot different. Like getting some hard figures, some test details, man after a week, come on! 

9th Mar 2020 16:59 GMTPeter Slootweg

Despite all tests, your specimen looks to me as a piece of glass/man made material. There are many types of glass, some tend to be harder than others. The most simple way to determine the difference is to put a small transparant piece under the polariscope. It will instantly tell if the material is anisotropic (beryl) or isotropic (glass). 

10th Mar 2020 11:28 GMTJORGE ESTRADA

Hey Peter, thanks for the feedback.
Glass or not, this has been so far a learning journey and I do really appreciate it. Nothing like experience.

Well, these guys I’m sure are familiar with it. 

What I don’t understand is why playing silly. I’m sure in 15 mins they could say is glass.

Just for your information, at the lobby there is an exquisite mineral collection, including all types of jade, ruby, quartz everything. Inside I saw fancy machines.

Why wasting time, honestly I don’t get it.


10th Mar 2020 11:56 GMTHarold Moritz Expert

Well, it goes to show how difficult it can be to identify a mineral from photos, especially when there are no crystals. I suggest when you get back to Texas that you bring it to a rock hound club meeting or to a mineral show where folks can look it over in person. I know that if I had it in hand I could tell you in less than a minute cuz I have dug so much beryl and also have seen many a glass slag from the dumps at the old iron mines here in Connecticut. Collectors in Texas may not be that familiar with massive beryl (cuz it's not a pegmatite hot-bed), so a show might be better. Not sure when the big ones in Dallas and Houston are, check web.

Maybe the gem folks are thinking you found some new deposit and they are trying to find it behind the scenes so they can get a claim on it while they string you along...I dunno.  :-)

10th Mar 2020 13:46 GMTJORGE ESTRADA

Thanks Harold I’ll definitely will when I get back.

Idk what to say to be honest, this is no a 1 person lab.

This is the HK Gemology Lab, most of the fine Jade is getting certified here along with some other gems.

Just the certificate they showed me as an example of what I was supposed to get, was from a super dark blue sapphire.

For the record, there are like 100 jewelry stores mostly Jade, next to the Lab.

Lets see what happens!!!

PS:,Yes planning to go back, if I found a piece why no finding more ;-)

Actually i’m planning for a day/night search.
 
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