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

Kunzite — specimen 0146Kunzite — specimen 0146

Weight: 7.25 ct; size: 15.93 | 8.56 | 7.12 mm; shape: oval; colour: medium light violet; very slightly greyish. Very clean specimen; very good Portuguese style cut. Source: David Weinberg, Multicolour Gems Ltd.
Ruby — specimen 0147Ruby — specimen 0147

Weight: 0.02 ct; size: 1.96 | 1.93 | 1.20 mm; shape: round; colour: medium dark purple; strong. Small, very clean specimen; excellent brilliant style cut. Source: David Weinberg, Multicolour Gems Ltd.
Sapphire — specimen 0148Sapphire — specimen 0148

Weight: 0.18 ct; size: 4.99 | 2.54 | 1.97 mm; shape: marquise; colour: colourless. Very clean specimen; good mixed style cut. Source: David Weinberg, Multicolour Gems Ltd.
Bowenite — specimen 0152Bowenite — specimen 0152

Weight: 5.12 ct; size: 14.07 | 10.03 | 4.85 mm; shape: oval; colour: medium yellow; very slightly brownish. Clean specimen; very good 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 0280weight: 0.75 ct; shape: oval. Very clean specimen; very good mixed style cut.
Bastnäsite-(Ce) — specimen 0280