Yellow/Purple Bi-Color #20/#65 Lab Created Corundum Sapphire Faceting Rough

Various sizes of Yellow/Purple Bi-Color Sapphire lab created sapphire/corundum rough for faceting and gemstone creation. Each split boule is listed for sale by weight and will typically vary in size within the following ranges: Length: 70mm Width: 17mm - 20mm Thickness: approximately 8mm at the base If you would like to see additional pictures of the piece(s) you would like, please feel free to contact me and I will be happy to provide additional pictures for you to review. Manufacturer: RGCrystals Color: #20 and #73 Note: The color of the stone in the photo may vary slightly as not all computer monitors are calibrated the same. Mineral: Corundum Chemical Formula: Al2O3 Crystal System: Trigonal Hardness (Mohs): 9 Refractive Index: 1.76–1.77 Density, g/cm3: 4 Dispersion: 0.018 Growth Method: Flame Fusion