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

Peridot — specimen 0310Peridot — specimen 0310

Weight: 0.37 ct; size: 4.42 | 4.41 | 2.78 mm; shape: round; colour: medium yellowish green; very slightly greyish. Very clean specimen; very good mixed style cut. Source: David Weinberg, Multicolour Gems Ltd.
Peridot — specimen 0311Peridot — specimen 0311

Weight: 0.35 ct; size: 4.42 | 4.38 | 2.70 mm; shape: round; colour: medium yellowish green; very slightly greyish. Very clean specimen; very good mixed style cut. Source: David Weinberg, Multicolour Gems Ltd.
Peridot — specimen 0312Peridot — specimen 0312

Weight: 0.34 ct; size: 4.45 | 4.42 | 2.69 mm; shape: round; colour: medium yellowish green; very slightly greyish. Very clean specimen; very good mixed style cut. Source: David Weinberg, Multicolour Gems Ltd.
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.
Featured
Cerussite

— Common in the oxidised zone of lead deposits, where it may constitute an important ore (Anthony et al., 2001—2005). Faceted specimens are very rare. The largest faceted stone is a 408 carat from Tsumeb, Namibia (Arem, 1987: 64).

Specimen figured

Cerussite — specimen 0029weight: 3.71 ct; shape: octagon. Very clean specimen; very good step cut style. Source: John Bradshaw, Coast to Coast Rare Stones International.
Cerussite — specimen 0029