Gemmology
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Repository

Some exceptional specimens of gemstones from our ‘Repository’

Repository


The section ‘Repository’ contains data and photos of 728 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 7 specimens of synthetic stones.

More specimens of gemstones

Variscite — specimen 0077Variscite — specimen 0077

Weight: 4.67 ct; size: 20.15 | 8.25 | 3.73 mm; shape: oval; colour: medium light green; slightly greyish. Clean specimen; cabochon style cut.
Rose quartz — specimen 0079Rose quartz — specimen 0079

Weight: 4.31 ct; size: 14.84 | 8.42 | 5.61 mm; shape: oval; colour: very light purple. Very clean specimen; mixed style cut.
Petschite — specimen 0081Petschite — specimen 0081

Weight: 0.20 ct; size: 5.06 | 2.97 | 2.08 mm; shape: oval; colour: light blue; very slightly greyish. Very clean specimen; good mixed style cut. Source: Gary Eisenberg, Knoxville, Tennessee.
Petschite — specimen 0082Petschite — specimen 0082

Weight: 0.30 ct; size: 5.07 | 3.15 | 2.18 mm; shape: oval; colour: light blue; very slightly greyish. Very clean specimen; good mixed style cut. Source: Gary Eisenberg, Knoxville, Tennessee.
Featured
Scolecite

— Primarily in cavities in basalts; in gneisses and amphibolites, and in dikes derived from syenitic magmas (Anthony et al., 2001—2005). Extreme rarity as faceted specimens.

Specimen figured

Scolecite — specimen 0068weight: 0.54 ct; shape: octagon. Very clean specimen; step cut style; good polish. Source: John Bradshaw, Coast to Coast Rare Stones International.
Scolecite — specimen 0068