Gemmology
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Repository

Some exceptional specimens of gemstones from our ‘Repository’

Repository


The section ‘Repository’ contains data and photos of 728 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

Malaia garnet — specimen 0399Malaia garnet — specimen 0399

Weight: 0.20 ct; size: 3.51 | 3.47 | 2.21 mm; shape: round; colour: medium light strongly purplish red; slightly brownish. Very clean specimen; good brilliant style cut. Source: David Weinberg, Multicolour Gems Ltd.
Andesine — specimen 0410Andesine — specimen 0410

Weight: 0.42 ct; size: 4.99 | 4.94 | 3.24 mm; shape: round; colour: medium red; strong. Very clean specimen; good mixed style cut. Source: David Weinberg, Multicolour Gems Ltd.
Oregon sunstone — specimen 0447Oregon sunstone — specimen 0447

Weight: 0.53 ct; size: 6.03 | 4.12 | 2.88 mm; shape: octagon; colour: light reddish orange; very slightly brownish. Very clean specimen; good step cut style. Source: Gary Eisenberg, Knoxville, Tennessee.
Vesuvianite — specimen 0486Vesuvianite — specimen 0486

Weight: 1.45 ct; size: 8.08 | 6.05 | 4.20 mm; shape: oval; colour: dark yellowish green. Very clean specimen; mixed style cut. Source: David Weinberg, Multicolour Gems Ltd.
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 0280weight: 0.75 ct; shape: oval. Very clean specimen; very good mixed style cut.
Bastnäsite-(Ce) — specimen 0280