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Some exceptional specimens of gemstones from our ‘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

Opal — specimen 0167Opal — specimen 0167

Weight: 1.15 ct; size: 9.02 | 5.40 | 3.79 mm; shape: octagon; colour: medium red; strong. Very clean specimen of ‘fire opal’ variety; step cut style.
Johachidolite — specimen 0174Johachidolite — specimen 0174

Weight: 0.03 ct; size: 2.27 | 1.66 | 1.22 mm; shape: oval; colour: medium light orangey yellow; strong. Very clean specimen; good mixed style cut. Source: David Weinberg, Multicolour Gems Ltd.
Jadeite — specimen 0200Jadeite — specimen 0200

Weight: 3.01 ct; size: 11.87 | 7.82 | 3.56 mm; shape: pear; colour: medium green; slightly greyish. Clean specimen; good cabochon style cut.
Smoky quartz — specimen 0202Smoky quartz — specimen 0202

Weight: 11.11 ct; size: 16.22 | 12.25 | 7.25 mm; shape: octagon; colour: dark reddish orange. Very clean specimen; step cut style.

— In granite and metamorphosed carbonate rocks associated with hydrothermal activity (Anthony et al., 2001—2005).

Specimen figured

Danburite — specimen 0122weight: 0.41 ct; shape: round. Very clean specimen; very good Portuguese style cut. Source: David Weinberg, Multicolour Gems Ltd.
Danburite — specimen 0122