Gemmology
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Repository

Some exceptional specimens of gemstones from our ‘Repository’

Repository


The section ‘Repository’ contains data and photos of 732 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 7 specimens of synthetic stones.

More specimens of gemstones

Moonstone — specimen 0131Moonstone — specimen 0131

Weight: 1.00 ct; size: 7.07 | 5.16 | 3.72 mm; shape: oval; colour: medium reddish orange; slightly brownish. Clean specimen; cabochon style cut.
Bytownite — specimen 0133Bytownite — specimen 0133

Weight: 2.00 ct; size: 10.12 | 8.12 | 5.22 mm; shape: pear; colour: very light yellow. Very clean specimen; good mixed style cut. Source: Gary Eisenberg, Knoxville, Tennessee.
Indicolite — specimen 0134Indicolite — specimen 0134

Weight: 0.17 ct; size: 3.49 | 3.49 | 2.46 mm; shape: round; colour: medium light very strongly bluish green; slightly greyish. Very clean specimen; good mixed style cut. Source: David Weinberg, Multicolour Gems Ltd.
Indicolite — specimen 0139Indicolite — specimen 0139

Weight: 0.19 ct; size: 3.59 | 3.57 | 2.43 mm; shape: round; colour: medium light very strongly bluish green; slightly greyish. Very clean specimen; good mixed style cut. Source: David Weinberg, Multicolour Gems Ltd.
Featured
Actinolite

— Produced by regional or contact metamorphism of magnesium carbonate, mafic, or ultramafic rocks (Anthony et al., 2001—2005). Faceted specimens are extremely rare.

Specimen figured

Actinolite — specimen 0075weight: 1.48 ct; shape: oval. Very clean specimen; mixed style cut; good polish. Source: John Bradshaw, Coast to Coast Rare Stones International.
Actinolite — specimen 0075