About Tanzanite

T
anzanite is said to have formed 585 million years ago on a plain under the shadow of mount Kilimanjaro. According to gemologists the circumstances that led to the gems formation were so unusual that the likelihood of finding Tanzanite somewhere else on earth is one in a million, making it a thousand times more rarer than diamonds. Tanzanite remained undiscovered until over 50 years ago when a masai shepherd Ali juyawatu stumbled upon this stone lying under the sun and picked them up and shared with his friend Manuel de Souza who was a tailor, he was the first one to bring the gem into the limelight initially thinking they were Sapphires.

It was then discovered that it was a new discovery never found before and it was found to be the mineral zoisite. The scientific name of Tanzanite was ‘Blue zoisite’ but the Tiffany & Co marketing department didn’t think it was consumer friendly because it sounded like ‘Blue suicide’ henceforth they decided to name it after its origin place Tanzania. Tanzanite continues to be recognized and loved all over the world and is a beautiful momento of Tanzania.

Tanzanite comes in a variety of colors from blue to violet, its easy to identify but difficult to duplicate as it’s a trichroic gem, which means that it has 3 layers of colors.
Tanzanite has a refractive index of 1.69 and hardness of 6.5-7 on the mohs scale,its not a hard stone similar to emarald for that it is advised to be worn with some care.
Similar to other gemstones you have to follow the 4C’s with Tanzanite as well. Color, clarity,cut and carat when used together, they describe the quality of a finished gem, which is directly related to its value.

COLOR
The best and most valuable tanzanites are considered those with the deepest shades of blue and purple. The color grading starts at the top with AAA which are the stones with deepest color, followed by AA which is slightly lighter, then to the paler but still beautiful shades of A B and C. Size also makes a difference in color, the bigger the stone, the more obvious its color.
CLARITY
The clarity of tanzanite is defined by the presence of inclusions. The best stones are the ones which contain no visible inclusions when examined under 10-power magnification by a skilled and experienced grader. All our gemstones are carefully examined so you can be confident in the quality of the gem.
CUT
The quality of the cut of each gem depends on the proportion of the stone and the angle of each facet, which are positioned to reflect light appropriately. It is a very precise process in which each facet is carefully cut and polished by our experienced gem cutters to give the finished gem maximum sparkle. A well cut gem can make light perform in breathtaking ways resulting in a magnificent tanzanite.
CARAT
The weight of cut tanzanite is measured in carats and one carat is one fifth of a gram. the large tanzanite is much more rarer than small ones, so they're more valuable.