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Identity Helpwhat is this?

13th Oct 2016 22:05 UTCBrus Wain

07049900016032149059442.jpg
hi,what is this?is harder than calcite and trasparent on sun.tnx.

08438060015670567689161.jpg

14th Oct 2016 08:59 UTCErik Vercammen Expert

Looks like a form of quartz, with some pinkish feldspar on one side.

14th Oct 2016 22:57 UTCEd Clopton 🌟 Expert

Or just quartz/chalcedony stained pink by iron oxides.
 
and/or  
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