Today, item is a natural Genuine Untreated Blue Star sapphire from Sri Lanka, set in a beautiful simple design Lady,s Ring, in sterling silver. The Gemstone has a good clear Natural star, it is very difficult to find natural Star sapphire s that are not treated as it is rare to find them and expensive.as this gemstone was from my own old collection made to this Beautiful ring. The ring Size is 7.5 Total ct weight of the gemstone is 2.10 ct and the Total Gram weight is 2.6 grams, and the design size is 18.42×8.18×6.83 mm Star Sapphire Gemstone Information About Star Sapphire – History and Introduction Star sapphire is rare variety of sapphire that exhibits a rare aster-ismunder specific lighting. When viewing star sapphire, a six-rayed star will appear to float across the surface of the stone. The effect is best viewed under a direct light source and while tilting and rotating the stone from different angles. Star sapphires contain unusual tiny needle-like incluToday, item is a natural Genuine Untreated Blue Star sapphire from Sri Lanka, set in a beautiful simple design Lady,s Rinsions of rutile. Aligned needles that intersect each other at varying angles produce the rare phenomenon known as aster-ism. Star sapphires can range in color from blue in various tones to pink, orange, yellow, green, lavender, gray or black. The most desirable color is a vivid, intense blue. Most star sapphire exhibits a white star, but star sapphire from Thailand is famed for its gold colored aster-ism.