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

Pargasite — specimen 0275Pargasite — specimen 0275

Weight: 0.82 ct; size: 7.64 | 4.99 | 3.21 mm; shape: oval; colour: medium dark reddish orange; strong. Very clean specimen; good mixed style cut.
Ruby — specimen 0276Ruby — specimen 0276

Weight: 0.61 ct; size: 6.33 | 4.36 | 2.79 mm; shape: pear; colour: medium dark strongly purplish red; very slightly brownish. Very clean specimen; good mixed style cut. Source: David Weinberg, Multicolour Gems Ltd.
Bytownite — specimen 0284Bytownite — specimen 0284

Weight: 2.28 ct; size: 10.27 | 8.10 | 5.44 mm; shape: pear; colour: very light yellow. Very clean specimen; good mixed style cut. Source: Gary Eisenberg, Knoxville, Tennessee.
Chromian pyrope — specimen 0289Chromian pyrope — specimen 0289

Weight: 0.37 ct; size: 3.90 | 3.90 | 2.66 mm; shape: octagon; colour: medium dark slightly purplish red; strong. Very clean specimen; good mixed style cut. Source: Michael Asa, Gem Line Inc.
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