We offer some of the best Tanzanite rings and jewellery in Cape Town, South Africa. Choose from our website or visit our showroom. Our Tanzanite is responsibly and directly sourced from the mines in Tanzania. All our Tanzanites are certified to confirm their origin. Tanzanite is a trading name that was first used by Tiffany and Company for gem-quality specimens of the mineral Zoisite with a blue color. Tiffany could have sold the material under the mineralogical name of “Blue Zoisite,” but they thought the name “Tanzanite” would stimulate customer interest and be easier to market. The name Tanzanite was given because the world’s only known Tanzanite deposit of commercial importance is in northern Tanzania. The name reflects the gem’s limited geographic origin. The mines are all located in an area of about eight square miles in the Merelani Hills, near the base of Mount Kilimanjaro and the city of Arusha. It naturally occurs in a wide range of colours that include colourless, grey, yellow, brown, pink, green, blue, and violet. The name Tanzanite is used for a colour variety of Zoisite that ranges from blue to bluish purple to bluish violet.