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

Hyacinth — specimen 0221Hyacinth — specimen 0221

Weight: 1.55 ct; size: 8.59 | 4.48 | 3.35 mm; shape: octagon; colour: medium reddish orange; strong. Very clean specimen; very good radiant style cut. Source: David Weinberg, Multicolour Gems Ltd.
Opal — specimen 0227Opal — specimen 0227

Weight: 1.66 ct; size: 12.18 | 5.57 | 3.79 mm; shape: octagon; colour: medium orangey red; very slightly brownish. Very clean specimen of ‘fire opal’ variety; step cut style.
Malaia garnet — specimen 0230Malaia garnet — specimen 0230

Weight: 0.20 ct; size: 3.53 | 3.50 | 2.21 mm; shape: round; colour: light reddish orange; very slightly brownish. Very clean specimen; good brilliant style cut. Source: David Weinberg, Multicolour Gems Ltd.
Danburite — specimen 0234Danburite — specimen 0234

Weight: 0.81 ct; size: 7.43 | 5.50 | 3.71 mm; shape: oval; colour: colourless. Very clean specimen; very good brilliant style cut. Source: David Weinberg, Multicolour Gems Ltd.
Featured
Scolecite

— Primarily in cavities in basalts; in gneisses and amphibolites, and in dikes derived from syenitic magmas (Anthony et al., 2001—2005). Extreme rarity as faceted specimens.

Specimen figured

Scolecite — specimen 0068weight: 0.54 ct; shape: octagon. Very clean specimen; step cut style; good polish. Source: John Bradshaw, Coast to Coast Rare Stones International.
Scolecite — specimen 0068