Various sizes of Medium Dark Ruby Red 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: 60mm - 120mmWidth: 16mm - 22mmThickness: approximately 10mm 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. Color: #7 Note: The color of the stone in the photo may vary slightly as not all computer monitors are calibrated the same. Mineral: CorundumChemical Formula: Al2O3Crystal System: TrigonalHardness (Mohs): 9Refractive Index: 1.76–1.77Density, g/cm3: 4Dispersion: 0.018Growth Method: Flame Fusion
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