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About Tanzanite. Found in just one place on earth, tanzanite is a relatively recent discovery. Tiffany & Co named this blue-violet variety of zoisite in honor of Tanzania, where it was first unearthed in 1967. Because the crystals show different colors depending on the viewing direction, cutters can fashion gems with a range of color from ...
Tanzanite usually has to be larger than five carats to reach a deep saturated violetish blue or bluish violet color. Small accent stones less than two carats in size are commonly a lighter color. 2. Consider a protective setting. With a hardness of 6 to 7, tanzanite is softer than many gems.
The new gem would eventually be known as tanzanite, and it would, at times, rival the Big 3 in popularity. Tiffany & Company recognized its potential as an international seller and made a deal to become its main distributor. Tiffany named the gem after the country it came from, and promoted it with a big publicity campaign in 1968.
Tanzanite is an extraordinary gemstone, its appearance is influenced greatly by its ability to show colors when viewed from different directions. Gem Encyclopedia ... and rich purple, exotic tanzanite is found in only one place on earth, near majestic Mount Kilimanjaro. Unique Hues. Unique violet-to-blue hues. Pure Blue. Tanzanite's rich hues ...
Tanzanite's pleochroism was documented in scientific papers not long after its discovery. In 1969, American Mineralogist described the gem's pleochroic colors as `red-violet, deep blue, and yellow green.' Today, most gems are heat treated, which removes or reduces the yellow green or brownish pleochroic color, maximizing the blue and violet.
Gem Encyclopedia is a virtual journey through the science and lore of Gemstones from across the globe. Each Gem page features Gemological Information, a Buyer’s guide, photos, videos & research. ... the country where it was discovered in 1967, tanzanite is the blue-to-violet or purple variety of the mineral zoisite. It’s become one of the ...
Tanzanite. A few decades ago, a beautiful blue gemstone was discovered in the African country of Tanzania. The stone, named after the country where it was found, is called tanzanite. It can be a clear blue, violet-blue, or bluish purple. The richer the color of the tanzanite, the more valuable it is. Pure blue or rich violet blue stones are the ...
With proper care to avoid hard blows, tanzanite can be worn in all styles of jewelry. - Courtesy Tanzanite Foundation ™ Hardness and toughness Gem and mineral hardness is measured on the Mohs scale. The numbers are based on the relative ease or difficulty with which one mineral can be scratched by another. But the Mohs scale is deceptive.
Tanzanite is a versatile gemstone that comes in a variety of sizes and cutting styles. Although it was only discovered in the late 1960s, it has quickly established itself as one of the premier gemstones in the world. Color. Tanzanite is a pleochroic gem, which means it can show different colors when viewed in different crystal directions.
Tanzanite Birthstone Meaning & History. Tanzanite may be a relative newcomer to the world of colored stones, but it was one of the most exciting gem discoveries of the 20 th century. Blue stones emerging from Tanzania were identified as the mineral zoisite in 1962.