This is a large, heart-facet, deep London-blue, natural Brazilian Topaz gemstone. It weighs 30.65cts and measures 19mm across.
Comes complete with a full appraisal and retail valuation certificate (includes full colour image of the stone).
Appraisal Value = £383.63
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:
19 mm
Shape:
Heart-Facet
Colour:
Deep London-Blue
Clarity:
Clean
Lustre:
Dazzling
Origin:
Brazil
Hardness:
8
Specific Gravity:
3.4 - 3.5+
Refractive Index:
1.61 - 1.64
Chemical Composition:
Al2SiO4(F,OH)3, Aluminum Silicate Fluoride Hydroxide
Crystal Structure:
Orthorhombic
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Postal Zone | Standard Cost | Insurance (optional) |
UK and Northern Ireland | £1.50 | £0.75 (recorded delivery) |
Europe | £2.00 | £2.00 (Airmail - signed for) |
Rest of the World | £2.50 | £2.00 (Airmail - signed for) |