This is a beautiful green Demantoid Garnet from Namibia. Demantoid has great dispersion (the fire seen in Diamonds) so it makes this beautifu gem dance under the lgiht. This gem is VVS clairty meaning it has inclusions that are only visibile only high magnification.
Demantoid is the name given to the rich green variety of Andradite Garnet. The gem was first discovered in Russia and the name is derived from its diamond-like adamantine luster. While the color of demantoid never equals that of the finest emerald, an emerald-green is the ideal. The color should be as intense as possible, without being overly dark or yellowish green. The name “garnet” may come from either the Middle English word gernet meaning ‘dark red’, or the Latin granatus (“grain”), possibly a reference to the Punica granatum (“pomegranate”), a plant with red seeds similar in shape, size, and color to some garnet crystals.