4.46 ct GIA CERTIFIED AAAA REMARKABLE OVAL CUT (10 X 8 MM) NATURAL D'BLOCK TANZANITE GEMSTONE

$1,229.99
In stock
SKU
212244
FREE GIA Certificate! IF Quality Heated Tanzanite
(or)
SKU 212244
Gem Type Tanzanite
Quantity in stock 1 item(s) available
Color Bluish Violet
Grade AAAA
Shape Oval
Size/Dimension (L x W) 10.16 x 8.36 x 6.60 mm
Weight 4.46 cts
Clarity IF
Number of Pieces 1
Luster Excellent
Origin Tanzania, United Republic Of
Treatment Heated
Hardness 6.5
Refractive Index 1.69-1.70
Specific Gravity 3.35
Chemical Composition (Ca2Al3(SiO4)(Si2O7)O(OH))
FL IF VVS1 VVS2 VS1 VS2 SI1 SI2 I1 I2 I3
Flawless-
Internally Flawless
Very Very Slightly Imperfect Very Slightly Imperfect Slightly Imperfect Imperfect
None
GIA Certificate (Processing Time 10 days) ($125)
FREE of cost, if offered Certificate for this item ($0)
GIL Certificate (Processing Time 5 days) ($15)

Tanzanite

Mohs Hardness - 6.5-7 Found in Mererani, Tanzania


History - Tanzanite is a blue zoisite which is trichroic - meaning it often shows different colors when viewed from different directions. In 1967 a rich violet-blue transparent type of zoisite was discovered in Tanzania. The stone was named after this, the only country they are found, two years later. Tanzanites are now found in blue, green,yellow, pink, and brwon, but all will change to a blue color when heated. The stone was added to the official December birthstone list in 2004. It has a low resistance to ultrasound, therefore, do not clean with ultrasonic cleaner. Zoisite was first discovered by Baron von Zois in Austria, and called Saualpite. Metaphysical - thought to stabilize emotions, for grounding, security, brings happiness, enhances communicative abilities.