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RUBY MINERAL                NATURAL COLOR             Hardness 9
 

 

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Ruby, natural tabular crystal  34 grms.  / 26.9 x 23 x 20.8 mm.( triangles on the head )
USD 165 .00   ref RUmit34g
                 
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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