Gemmology
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Repository

Some exceptional specimens of gemstones from our ‘Repository’

Repository


The section ‘Repository’ contains data and photos of 760 specimens of gemstones. The smallest is just 1.96 mm (0.02 ct) ruby from Mozambique, and the largest — 70.11 mm (326.60 ct) rock crystal from Africa.

Additionally there are 8 specimens of synthetic stones.

More specimens of gemstones

Diamond — specimen 0315Diamond — specimen 0315

Weight: 0.03 ct; size: 1.97 | 1.97 | 1.17 mm; shape: round; colour: colourless. Very small, very clean specimen; good brilliant style cut.
Ruby — specimen 0318Ruby — specimen 0318

Weight: 0.11 ct; size: 2.67 | 2.63 | 2.00 mm; shape: round; colour: medium dark purple; strong. Small, very clean specimen; good brilliant style cut. Source: David Weinberg, Multicolour Gems Ltd.
Agate — specimen 0321Agate — specimen 0321

Weight: 2.60 ct; size: 8.08 | 8.08 | 5.10 mm; shape: round; colour: dark very slightly bluish green. Clean specimen; cabochon style cut.
Agate — specimen 0322Agate — specimen 0322

Weight: 2.25 ct; size: 8.09 | 8.09 | 4.54 mm; shape: round; colour: dark very slightly bluish green. Clean specimen; cabochon style cut.
Featured
Titanite

— Also known as sphene; a common accessory mineral in intermediate and felsic rocks, pegmatites, and alpine veins; in gneisses, schists, and some skarns (Anthony et al., 2001—2005).

Specimen figured

Titanite — specimen 0313weight: 0.62 ct; shape: round. Very clean specimen; very good mixed style cut. Source: David Weinberg, Multicolour Gems Ltd.
Titanite — specimen 0313