Tanzanite, tanzanites purple tanzanite, blue tanzanite, violet tanzanite, custom cut, calibrated tanzanite, calibrated, zoisite, tanzania, arushaWholesale Ruby Sapphire

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Tanzanite round Tanzanite square princess Tanzanite oval tanzanite pear tanzanite marquise tanzanite octagon tanzanite cushion tanzanite trillian
Tanzanite
Chemical Formula (Ca2Al3(SiO4)(Si2O7)O(OH))

Tanzanite comes from the zoisite family. Tanzanite naturally occur in nature and are usually reddish brown in colour and it is common to heat (thermal enhancement) tanzanites to improve their colour.

We carry tanzanites in calibrated sizes in several shapes such as rounds, ovals, marquise, etc in various sizes. For more information on the sizes we usually keep in calibrated sizes, please click here.

We can also cut precision cut tanzanites, this is finely cut and crafted to bring the maximum brilliancy into it. This is done with the help of automated machines and skilled labour. For your demands in precision cut, please contact us for more information.

We can accomodate pairs, layouts and single unique tanzanites. Also perfected is the art of special cuts or custom cuts. This is suited to fit your specifications and can be any shape and/or cut of your choice. For your requirements, please contact us.

Crystal Habit Crystals flattened in an acicular manner,may be fibrously curved
Crystal System Orthorhombic
Cleavage Perfect {010} imperfect {100}
Fracture Uneven to conchoidal
Hardness (Mohs Scale) 6.5
Luster Vitreous, pearly on cleavage surfaces
Refractive Index 1.69-1.70
Optical properties biaxial positive
Birefringence 0.006-0.018
Pleochroism Present, dichroism or trichroism depending on color
Streak White or colourless
Specific Gravity 3.10-3.38

 

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