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

Hambergite — specimen 0489Hambergite — specimen 0489

Weight: 0.26 ct; size: 5.15 | 3.86 | 2.54 mm; shape: oval; colour: colourless. Very clean specimen; very good mixed cut style. Source: David Weinberg, Multicolour Gems Ltd.
Phenakite — specimen 0490Phenakite — specimen 0490

Weight: 0.41 ct; size: 5.54 | 4.37 | 2.80 mm; shape: oval; colour: colourless. Very clean specimen; very good Portuguese style cut. Source: David Weinberg, Multicolour Gems Ltd.
Phenakite — specimen 0491Phenakite — specimen 0491

Weight: 0.41 ct; size: 5.56 | 4.41 | 2.51 mm; shape: oval; colour: colourless. Very clean specimen; very good Portuguese style cut. Source: David Weinberg, Multicolour Gems Ltd.
Phenakite — specimen 0493Phenakite — specimen 0493

Weight: 0.78 ct; size: 6.37 | 4.58 | 3.56 mm; shape: rectangle; colour: colourless. Very clean specimen; very good radiant style cut. Source: David Weinberg, Multicolour Gems Ltd.
Featured
Epidote

— Characteristic of several facies of regionally metamorphosed rocks and some contaminated felsic igneous rocks; in contact zones between igneous and calcareous sedimentary rocks; from alteration of plagioclase (Anthony et al., 2001—2005). Faceted specimens are rare.

Specimen figured

Epidote — specimen 0054weight: 0.52 ct; shape: octagon. Very clean specimen; very good step cut style. Source: John Bradshaw, Coast to Coast Rare Stones International.
Epidote — specimen 0054