Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Ruby

This page kindly sponsored by Buy Gemstones Online
Formula:
Al2O3
Colour:
Red
Hardness:
9
A variety of Corundum

A red, gem variety of corundum. The red colour is caused by minor amounts of trivalent Cr replacing Al in the crystal structure.

In traditional gemmological terms, ruby has to be blood-red and of clear, facetable quality to justify the name, however in wider usage any corundum with a red or reddish colour has attracted the name 'ruby', and this name is usually applied in this way by mineral collectors.

Pink corundum is usually referred to in gemmological terminology as pink sapphire rather than ruby.

Pure Cr2O3 occurs in nature as the mineral eskolaite which is green.

Visit gemdat.org for gemological information about Ruby.

Classification of Ruby

mindat.org URL:
http://www.mindat.org/min-3473.html
Please feel free to link to this page.

Physical Properties of Ruby

Colour:
Red
Hardness (Mohs):
9

Chemical Properties of Ruby

Formula:
Al2O3
Essential elements:
All elements listed in formula:

Other Names for Ruby

Name in Other Languages:
Arabic:ياقوت
Basque:Errubi
Bulgarian:Рубин
Czech:Rubín
Danish:Rubin
Dutch:Robijn
Esperanto:Rubeno
Estonian:Rubiin
Finnish:Rubiini
French:Rubis
Galician:Rubí
German:Rubin
Indonesian:Rubi
Italian:Rubino
Japanese:ルビー
Korean:루비
Latvian:Rubīns
Lithuanian:Rubinas
Norwegian (Bokmål):Rubin
Persian:یاقوت
Polish:Rubin
Portuguese:Rubin
Romanian:Rubin
Russian:Рубин
Serbian (Cyrillic Script):Рубин
Simplified Chinese:红宝石
Slovak:Rubín
Slovenian:Rubin
Spanish:Rubí
Swedish:Rubin
Traditional Chinese:紅寶石
Turkish:Yakut
Ukrainian:Рубін
Vietnamese:Hồng ngọc

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Ruby

Specimens:
The following Ruby specimens are currently listed for sale on minfind.com.

Localities for Ruby

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: April 26, 2015 03:57:48 Page generated: April 25, 2015 00:33:51