Tanzanite costs between $50 and $650 per carat as of 2015. Factors determining the cost include the quality of the stone and its relative size. The quality of the final cut also affects its value. More »

www.reference.com Beauty & Fashion Jewelry & Watches Precious Metals & Gems

As of April 2015, a 2-carat diamond ring can cost anywhere from around $11,000 to as much as $97,000 or more, according to The Diamond Registry. A ring that has a 2-carat diamond is more expensive than a ring with a 1-ca... More »

Diamonds are chemically composed of elemental carbon and are the hardest known natural substances. Physically, industrial-grade diamonds are black in color, due to impurities, and gem diamonds come in a variety of colors... More »

As with other gems, the value per carat of tanzanite is influenced by color, cut and clarity. Other factors jewelers use to grade tanzanite include shape and polish. More »

www.reference.com Beauty & Fashion Jewelry & Watches Precious Metals & Gems

As of February 2015, the highest quality tanzanite is worth approximately $400 per carat. This tanzanite is deemed AAA+ quality which renders it to be the best. Tanzanite that has a rating of AAA quality, which is still ... More »

December has three birthstones: tanzanite, zircon and turquoise. All of these birthstones are available in various shades of blue. Tanzanite has a rich violet-blue color, but it can vary across a range from blue to purpl... More »

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Although some months have alternative birthstones, the most commonly purchased birth stones are the 12 traditional stones: garnet, amethyst, aquamarine, diamond, emerald, pearl, ruby, peridot, sapphire, tourmaline, topaz... More »

www.reference.com Beauty & Fashion Jewelry & Watches Precious Metals & Gems