Product｜Montana Round Sapphire Pair Quality｜<<Traditional Heating>> Sapphire from Montana, USA. Compared with sapphires from anywhere else in the world, the vast majority of Montana sapphires are Teal, blue-green or other two-color mixtures, and the color is mostly light, and the clarity is generally very high. Therefore, slight heating is only used to deepen the original light blue tone of the sapphire. The Mohs hardness of Montana sapphire and sapphires from other origins is 9. Clear｜VSI- [Referring to the GIA standard for clarity, this gem is still not easy to fully see some of the inclusions of the gem after magnification 10 times] Quantity｜0.61 carat Shape｜Diameter 4.05mm; Height 3.0mm｜Round Brilliant Cutting [Round Brilliant]． Cutting grade: Excellent Color｜Medium blue with a slight green tint