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Is all tanzanite heat treated?

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Although some dealers may tell you they have unheated stones, it is best to take this with a pinch of salt. The accepted wisdom is that all Tanzanite is heated. Unheated the stone is a brownish colour and only after heating does it go blue/violet. Some crystals have admittedly been heated in the ground and are already blue but will generally be heated again anyway as the color always improves further. Stones are heated at 600 degrees celcius in a gemological oven for a short time. Further information is available at <a href=http://www.lapigems.com/tanzanite.asp</a>
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What value has tanzanite?

AAA quality tanzanite Vb or bV 6/5 or 5/6 has a value of around £250 per ct. TV stores do not usually sell this quality and value should be reduced accordingly     Fo

Is tanzanite quartz the same as tanzanite diamond?

  Actually neither term is correct. Tanzanite is a variety of the mineral Zoisite. Quartz and Diamond are minerals in their own right and there is absolutely no connection

Where is Tanzanite mined?

Tanzanite can only be founded in Africa's Rift Valley. It is about 25 miles from Mt. Kilimanjaro in Tanzania, in an area called Marerani. There are four actively mined tanzani

What is tanzanite worth?

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

How is tanzanite mined?

Tanzanite is mined in 4 sections. Block A, B,C and D blocks were  made by the government/ Blocks A and C were given to large  operators and Blocks B and D were for local min

What is ocean tanzanite?

It's just a name assigned to this color stone from Jewelry Television (JTV) with their trademark on it. They used to call it green tanzanite and claimed that it was a cross be

How abundant is tanzanite?

Sadly it is not any more, it has been said that in approx 8 years there will be no more. All the mones have closed now I believe except one in Africa, Tanzanite is running out

What chemical is in tanzanite?

Tanzanite is the blue/purple variety of the mineral zoisite, its chemical formula is :- (Ca2Al3(SiO4)(Si2O7)O(OH)).

Is Tanzanite a diamond?

No, "tanzanite" is a trade name for the mineral zoisite, no relation to diamond.

What is tanzanite quartz?

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
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Why do you heat treat?

You heat treat to improve the molecular structure of the steel. In the untreated state steel is very soft and is relatively easy to bend but when hardened the steel become ver