Big Blue. This remarkably sized, oval-cut Tanzanite gem could be the defining piece in any connoisseur's collection. This astonishing, cobalt blue gem could also become the basis of an astonishing piece of High Jewelry. The color is pure, electrifying blue of incredible depth and density, much like the Blue Sapphires that have passed through history. Tanzanite is a recent discovery by comparison, and the known supply is limited. With this in mind, this very large, rare, clear specimen may be a o Classic Blue Gia Certified Gemstones, Classic Gia Certified Blue Gemstones, Oval Sapphire Gemstones For Formal Occasions, Classic Blue Brilliant Cut Gemstones, Blue Brilliant Cut Classic Gemstone, Formal Blue Tanzanite Gemstones, Classic Blue Gemstones For Formal Occasions, Oval Tanzanite Gemstones For Formal Occasions, Classic Faceted Oval Gemstones