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Natural Topaz - 10.735 ct - Rough topaz - facet quality
Certificate: RO-TOPA026CL-003-468
Shape & Cutting Style : rough gemstone crystalMeasurements : 6.1 x 6.0 x 5.0 mmCarat Weight : 10.735 caratColor : White (very ligh champaign incfluence)Clarity : depends on selection when cutting (not completely eye clean)Transparency : TransparentBinefringence: 0.008-0.011Crystallography : OrthorhombicHardness : 8Luster : depends on cutting styleRefractive Index : 1.607-1.649 Specific Gravity : 3.50-3.57
COMMENTS :
no indications of treatmentnot completely eye cleaninternal fissures - featherstension lines
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