Fine Tanzanite eye clean heart, weighing 7.28 cts from Tanzania. Tanzanite is the trade name given by the gemmologists at Tiffany & Co to the transparent violet-blue variety of Zoisite, the mineral which was described by Abraham Gottlob Werner in 1805. Tanzanite is generally enhanced by heat unless otherwise specified.Surprisingly, it is the dark brown crystals that produce the most valuable dark blue stones after heating.
The name ruby comes from the Latin word ruber, which means “red.” The glowing red of ruby suggested an inextinguishable flame burning in the stone, even shining through clothing and able to boil water. Ruby has been called the most precious of the 12 stones created by God.
square cushion tanzanite, pale specimen, but great fire. Tanzanite is know for it's display of three colors, purple, blue, reds
royal blue cushion sapphire
Nepalese Kyanite May be found in: Blue, white, rarely green, gray, yellow, pink, orange, and black, can be zoned Kyanite is a member of the aluminosilicate series, which also includes the polymorph andalusite and the polymorph sillimanite. Kyanite is strongly anisotropic, in that its hardness varies depending on its crystallographic direction. In kyanite, this anisotropism can be considered an identifying characteristic.