Tanzanite: What you need to know about color, rarity, valueTanzanite is a rare blue gem and a popular alternative to blue sapphire. . by Tiffany and Company for gem-quality specimens of the mineral zoisite with a blue color. .. Pleochroism complicates the cutting process of tanzanite. . in northern Tanzania where all of the world's known commercial tanzanite production occurs.manufacturing of tanzanite mineral process and proceders,Tanzanite Processing in Tanzania: Challenges and OpportunitiesMay 27, 2016 . Keywords: Gemstones, Gemstone processing, Tanzanite, Mineral Policies, .. Procedures for application and granting of license issued under these . The period before the 1990s saw decline in production mainly attributed to.
manufacturing of tanzanite mineral process and proceders