7.45 ct Magnificent fire Cabochon Cut (16.73 x 10.64 mm) Blue Tanzanite

Color
Tanzanite has what many would consider the finest blue hue in the world of gemstones, a color which often leaves even the finest sapphires lacking. The gem is strongly trichroic.
A chromium-colored green tanzanite is also found in Tanzania.

Cut
In the market, tanzanites are found in a variety of shapes and cutting styles. Ovals and cushions are the most common, but rounds are also seen, as are other shapes, including emerald cuts, trillions, etc. Cabochon-cut tanzanites are not often seen.