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RUBY MINERAL              NATURAL COLOR             Hardness 9
 

 

RETURN TO WHITE SAPPHIRE MINERAL

C  corundum is composed of pure alumina; its colouring is due to metallic

oxide traces or inclusions. The color of ruby is due to chromium oxide.
Gems are generally found in alluvium, but come either from basaltic slags, or from metamorphic marble.
17.25 cts.  White-pinkish tabular Sapphire crystal  single (white triangle on one face ) (translucent) Damaged at a border

19.3 x 16.9 x 4.4 mm. ORIGIN: Madagascar 

USD 49.00 

ref: WSAPbr1725c 

Hardness: 9 Ruby discovery
Specific Gravity: 3.9 - 4.1
Refractive Index: 1.76 - 1.78 Corundum data
Chemical Composition: Al2O3, Aluminum Oxide   Ask a question
Crystal Structure: Trigonal
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