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

Marialite-meionite series — specimen 0255Marialite-meionite series — specimen 0255

Weight: 0.39 ct; size: 6.11 | 4.02 | 2.82 mm; shape: oval; colour: light yellow; very slightly brownish. Very clean specimen; good mixed style cut. Source: Gary Eisenberg, Knoxville, Tennessee.
Sapphire — specimen 0263Sapphire — specimen 0263

Weight: 0.18 ct; size: 3.45 | 3.43 | 2.11 mm; shape: round; colour: light yellow; very slightly brownish. Very clean, not treated specimen; good brilliant style cut. Source: David Weinberg, Multicolour Gems Ltd.
Malaia garnet — specimen 0268Malaia garnet — specimen 0268

Weight: 0.19 ct; size: 3.54 | 3.51 | 2.15 mm; shape: round; colour: medium light yellowish green; slightly greyish. Very clean specimen; good brilliant style cut. Source: David Weinberg, Multicolour Gems Ltd.
Malaia garnet — specimen 0269Malaia garnet — specimen 0269

Weight: 0.18 ct; size: 3.46 | 3.41 | 2.10 mm; shape: round; colour: medium light yellowish green; slightly greyish. Very clean specimen; good brilliant 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