This is a trilliant-facet, purple/blue, natural Tanzanite gemstone. It weighs 0.85cts, measures 6mm across and has a clarity grade of SI-1.
Comes complete with a full appraisal and retail valuation certificate (includes full colour image of the stone).
Appraisal Value = £238.00
Our appraisals are created using software from Gemworld International Inc, who are an independent, American Based company that do not buy or sell gemstones making their software the most unbiased in the industry.
Below are the technical details:
Size: | 6 mm | |
Shape: | Trilliant-Facet | |
Colour: | Purple/Blue | |
Clarity: | SI-1 | |
Lustre: | Ravishing | |
Origin: | Tanzania, Africa | |
Hardness: | 6 - 7 | |
Specific Gravity: | 3.2 - 3.4 | |
Refractive Index: | 1.69 - 1.70 | |
Chemical Composition: | Ca2Al3(SiO4)3(OH), Calcium Aluminum Silicate Hydroxide | |
Crystal Structure: | Orthorhombic |
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