Natural Rare Ceylon Color-Change Purple Sapphire Round & Bezel Cut VSI 6.70ctw

This is a Stunning!! Natural Rare Ceylon Purple 100% Color-Change Sapphire. That is unheated and untreated. In a round and bezel cut. The carat weight is 6.70ctw the measurements are 10.4x13.5x9.1mm This is mined in Sri Lanka. This has a excellent cut grade. This is also rare! because you have two different cuts in this Sapphire! Round and bezel cut. This has a 100% color-change as you can see in my pictures. I used a UV pen light to show the color-change effect. As you can also see it in my hand. To have this Color-Change phenomenon, is by trace elements. The Ceylon Purple Color-Change Sapphire has to have both Vanadium and Chromium in their structure, along with "evenly distributed" throughout the Sapphire. These elements and their uneven distribution, allows the Sapphire to absorb different wavelengths of light, creating the visible color-change under various lighting conditions. This has a excellent cut grade. These Ceylon Purple Color-Change Sapphire are considered Extremely Rare! Making this Vintage! This is the most sought-after Ceylon Color-Change Purple Sapphire, by collectors all over the world. This would make a stunning ring or pendant setting. Comes with a gem jar If you have any questions please don't hesitate to ask me! Origin: Sir Lanka Hardness: 9.00 like a Diamond Refractive Index: 1.76-1.77 Relative Density: 3.90-4.10 This is a Extremely Rare Ceylon Purple Color-Change Sapphire!