These are 2 pieces of very unusual, pear cabochon-cut, natural Ethiopian Welo Black Opal gemstones. They weigh 0.10cts (0.20cts total weight) and measure 5x3mm each.
Below are the technical details:
Size:
A Pair of 5x3 mm
Shape:
Pear Cabochon-Cut
Colour:
Fine Multi-Colour (Colours/Patterns Vary)
Clarity:
Opaque
Lustre:
Excellent
Origin:
Ethiopia
Hardness:
5.5 - 6.5
Specific Gravity:
1.42 - 2.25
Refractive Index:
1.37 - 1.47
Chemical Composition:
SiO2-nH2O, Hydrated Silicon Dioxide
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