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

Turquoise — specimen 0601

— Weight: 0.66 ct; size: 7.01 | 5.01 | 2.59 mm; shape: oval; colour: medium green-blue or blue-green; very slightly greyish. Clean specimen; good cabochon style cut.

Turquoise — specimen 0602

— Weight: 0.68 ct; size: 7.03 | 5.02 | 2.70 mm; shape: oval; colour: medium green-blue or blue-green; very slightly greyish. Clean specimen; good cabochon style cut.

Malachite — specimen 0603

— Weight: 3.80 ct; size: 10.15 | 8.02 | 4.31 mm; shape: pear; colour: medium dark very slightly bluish green; very slightly greyish. Clean specimen; good cabochon style cut.

Chrome-chalcedony — specimen 0610

— Weight: 6.08 ct; size: 17.33 | 9.66 | 6.03 mm; shape: marquise; colour: medium dark very slightly bluish green; very slightly greyish. Clean specimen; cabochon style cut..

Featured

Bastnäsite-(Ce)

— The most abundant rare earth elements-bearing mineral, typically hydrothermal, although primary igneous occurrences are known; in granite and alkali syenites and pegmatites; in carbonatites (Anthony et al., 2001—2005). Faceted specimens are very rare.

Specimen figured

Bastnäsite-(Ce) — specimen 0280 — weight: 0.75 ct; shape: oval. Very clean specimen; very good mixed style cut.