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RUBY MINERAL                NATURAL COLOR             Hardness 9
 

 

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Ruby, natural  crystal 16 grms.  

22.3 x 20.2 x 14.4 mm 

USD 128.00     ref RUmit16gr

 

                 
Hardness: 9
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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