Chrome Tanzanite

Chrome Tanzanite is a green, chromium (Cr) bearing variety of Tanzanite. Research has shown that the yellowish green to bluish rocks that are green colored by varying amounts of chromium and vanadium. When this green Tanzanite ended up being discovered in 1991 in the mine at the Merelani Hills of Tanzania, local miners fist called it overcome, it resembled the green of armed forces uniforms because they thought. The name Güblinite was proposed to the 1991 International Colored Gemstone Association (ICA) congress in honor of Dr. Edward Gübelin’s efforts to the gem industry. Mineralogists seem to prefer to call ths material zoisite that is green while many gem dealers have adopted the name Chrome Tanzanite, in mention of the existence of chromium whilst the color element. The name Chrome Zoisite has additionally been used. The name Green Tanzanite is the one preferred by the Tanzanian Ministry of Water, Energy and Minerals.

The Tanzanite deposit at Merelani was first discovered in 1967. The tanzanian government divided the mining area into four sections, called A – D Blocks, which are mined independently but under government guidance to market more arranged minining in the area. Green Tanzanite is apparently being discovered only in B Block. Violetish Tanzanite that is blue was mined by the openpit method; now all of the minig is underground. The gem-quality Tanzanite that is green was at one of the deeper tunnels (B Block), at around 70 meters underneath the surface.