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

Cordierite — specimen 0389Cordierite — specimen 0389

Weight: 0.21 ct; size: 5.04 | 3.06 | 2.44 mm; shape: oval; colour: medium light blue; very slightly greyish. Very clean specimen; good mixed style cut. Source: Gary Eisenberg, Knoxville, Tennessee.
Cordierite — specimen 0390Cordierite — specimen 0390

Weight: 0.20 ct; size: 5.03 | 3.07 | 2.34 mm; shape: oval; colour: medium light blue; very slightly greyish. Very clean specimen; good mixed style cut. Source: Gary Eisenberg, Knoxville, Tennessee.
Agate — specimen 0392Agate — specimen 0392

Weight: 2.64 ct; size: 14.35 | 8.06 | 3.25 mm; shape: marquise; colour: dark reddish orange. Clean specimen; very good cabochon style cut.
Agate — specimen 0393Agate — specimen 0393

Weight: 2.53 ct; size: 14.24 | 7.90 | 3.14 mm; shape: marquise; colour: dark reddish orange. Clean specimen; very good cabochon style cut.
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