“Electra” Paraiba Tourmaline 4.59 cts website

“Electra” Paraiba Tourmaline 4.59 cts

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Originally, Paraiba is the name of the mine in Brazil where this green-blue variety of copper-bearing Elbaite Tourmaline was found. The name was exclusive for the Brazilian treasure until the beginning of 2000’s, when similar variety of neon color gemstone was discovered in Nigeria and later in Mozambique. Nowadays, the name Paraiba Tourmaline or simply Paraiba is used in gem trade for any copper-bearing Tourmaline of this electric blue/green color. Note that the presence of copper is essential in the lab report, regardless the origin.

Stone type: Paraiba Tourmaline 
Weight: 4.59 cts
Dimension: 14.25 x 9.57 x 6.26 mm
Color: Blue
Shape & Cut: Pear, Original cut
Certified: GIA

Treatment: Conventionally heated at low temperature
Refractive Index: 1.618-1.643
Hardness: 7-7.5
Specific Gravity: 3.1
Optical properties: Doubly refractive
Chemical formula: Complex Boron Silicate, Copper-bearing
Shipment from: Thailand
Return Policy: 3 Day Money-Back Return*

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