tanzanite is used for making jewellry
Tanzanite is mined in Northern Tanzania, on a ridge near Mererani, some 40 km southeast of Arusha.
The largest cut tanzanite in the world is the Ophir Tanzanite. The Ophir Tanzanite weighs 508.06 carats and has been recognized by GUINNESS WORLD RECORDS™ as the largest cut tanzanite in the world. The Ophir Tanzanite is owned by Ophir Collection, LLC.
Tanzanite
It entirely depends on the quality of the stone you buy. Tanzanite can range from $100 per carat to $2000 per carat depending on the quality and of course where you buy. This site has some excellent information on Tanzanite: http://www.lapigems.com
Locally one can find tanzanite jewelry at JCPenney. Tanzanite is a stone that is becoming more difficult to find. But one can also purchase tanzanite jewelry online at Gemvara and Amazon.
Tanzanite quartz, according to Crystal Age.com, is an artificially created stone that reflects intense energy. Tanzanite aura quartz is made from quartz that has went through a special process. In this process, indium, gold or niobium is used to bind with the quartz and the resulting crystals exhibit a tanzanite appearance.
Tanzanite is found in an area where there are no diamonds. Natural tanzanite is endemic only to the Mererani Hills of Northern Tanzania.
Fermium hasn't uses.
You find tanzanite @Mt.kilimanjaro tanzanian but its very rare across the world.
Tanzanite is primarily mined in Tanzania, making it the top producer of the gemstone. Other countries where tanzanite can be found include Kenya and Madagascar, but the bulk of the world's tanzanite supply comes from Tanzania.
chemistry
Some important uses for Onyx are Gemstones, Ornamental stones, Birth stones, and Decoration.