(Closed) Lab-Created Star Ruby 8mm Round Cabochon | Sold by each | 68676

This round lab-created star ruby cabochon is economical and versatile. Place them in PMC+ and PMC3 designs; theyll withstand the heat of firing. Star ruby is created from lab-grown red corundum and its distinctive six-ray star, easily visible under any light source, is the result of the introduction of titanium into the process as the mineral forms. The titanium forms inclusions in the forming mineral structure that, under intense heat and pressure, produce the appearance of the star. The star effect, known as asterism, tends to be more defined and easier to see in a created stone. Specifications: Cutting Center : Germany Stone size : 8.0mm Stone(s) shape : Round Material : Ruby Stone type : Manmade Color : Plum Red Mohs hardness : 9 Refractive index : 1.7571.779 Specific gravity : 3.964.05 Treatment : Synthetic (SYN)