Is tanzanite cabochon valuable?

Tanzanite cabochons are widely used in silver jewelry because of their medium price range. Tanzanite cabochons start from 2 USD per carat and go up to 25 USD per carat depending on quality and size.

How can you tell the quality of tanzanite?

The best quality tanzanite is “clean” and free of visible inclusions of any kind that can be viewed only by a jewelers loupe. Buyer’s note: A large, clean rough Tanzanite is becoming extremely rare, so larger fine gems are rapidly rising in price and decreasing in availability.

How can you tell quality of tanzanite?

Tanzanite’s color can be a very bright, intense blue. In exceptional tanzanites, the color is an intense violetish blue with red flashes of pleochroic color coming from within the stone. Due to the gem’s strong pleochroism, fashioned examples typically show a mix of both blue and violet colors in a wide range of tones.

When was tanzanite the second most popular gem?

Although nearly all of the world’s most popular gemstones have been known and used for hundreds of years, tanzanite was not discovered in commercial quantities until the 1960s. In the short time since then, it has become the second most popular blue gem after sapphire.

Which is the faceted form of tanzanite?

Tanzanite is a stone of transmutation, shifting from lilac-blue to sapphire blue and into deep blue-violet. In faceted form it is stunning, celebrated as the Gemstone of the 20th Century and first promoted by the New York jewelers, Tiffany & Co. who created magnificent pieces to showcase this stone.

Which is a better blue stone, tanzanite or sapphire?

Tanzanite and sapphire are the two favorite blue stones in the gem marketplace. Tanzanite is a gem that many people desire because of its unique beauty and characteristics. Others purchase tanzanite because it has a beauty similar to sapphire but at a much lower price. Tanzanite also competes with lab-created…

How long does it take to change the color of tanzanite?

When vanadium-bearing zoisite is heated to a temperature of 600 degrees Celsius for about 30 minutes, the oxidation state of the vanadium is changed and that change causes or improves the blue color. The heat treatment of tanzanite is very mild when compared to what is often done for gems such as rubies and sapphires.