Gemmology
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Repository

Some exceptional specimens of gemstones from our ‘Repository’

Repository


The section ‘Repository’ contains data and photos of 745 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

Agate — specimen 0322Agate — specimen 0322

Weight: 2.25 ct; size: 8.09 | 8.09 | 4.54 mm; shape: round; colour: dark very slightly bluish green. Clean specimen; cabochon style cut.
Agate — specimen 0325Agate — specimen 0325

Weight: 4.02 ct; size: 14.41 | 10.17 | 3.24 mm; shape: oval; colour: medium dark orange; strong. Clean specimen; very good cabochon style cut.
Indicolite — specimen 0329Indicolite — specimen 0329

Weight: 0.19 ct; size: 3.61 | 3.60 | 2.52 mm; shape: round; colour: light very strongly greenish blue; very slightly greyish. Very clean specimen; good mixed style cut. Source: David Weinberg, Multicolour Gems Ltd.
Indicolite — specimen 0330Indicolite — specimen 0330

Weight: 0.18 ct; size: 3.65 | 3.64 | 2.46 mm; shape: round; colour: light very strongly greenish blue; very slightly greyish. Very clean specimen; good mixed style cut. Source: David Weinberg, Multicolour Gems Ltd.
Featured
Gadolinite-(Y)

— In granite and alkalic granite pegmatites (Anthony et al., 2001—2005). Faceted specimens are extremely rare.

Specimen figured

Gadolinite-(Y) — specimen 0087weight: 2.21 ct; shape: octagon. Clean, opaque specimen; very good step cut style. Source: John Bradshaw, Coast to Coast Rare Stones International.
Gadolinite-(Y) — specimen 0087