This is a pair of unusual, oval cabochon-cut, natural Indian rainbow Moonstone gems. They weigh 2.65cts (5.30cts total) and measure 10x8mm each.
Below are the technical details:
Size: A Pair of 10x8 mm Shape: Oval Cabochon-Cut Colour: Rainbow-Effect Clarity: Translucent Lustre: Bright Origin: India Hardness: 6 - 6.5 Specific Gravity: 2.64 - 2.68 Refractive Index: 1.533 - 1.552 Chemical Composition: NaCa(Al, Si)AlSi2O8, Sodium Calcium Aluminum Silicate Crystal Structure: Monoclinic