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

Grossular-andradite series — specimen 0027

— Weight: 0.72 ct; size: 6.07 | 4.96 | 3.45 mm; shape: oval; colour: medium light greenish yellow; strong. Very clean specimen; very good mixed style cut. Source: David Weinberg, Multicolour Gems Ltd.

Andalusite — specimen 0033

— Weight: 0.55 ct; size: 4.84 | 4.76 | 3.43 mm; shape: round; colour: medium dark reddish orange; strong. Very clean specimen; very good mixed style cut. Source: John Bradshaw, Coast to Coast Rare Stones International.

Oregon sunstone — specimen 0038

— Weight: 0.52 ct; size: 6.14 | 3.99 | 2.85 mm; shape: octagon; colour: colourless. Very clean specimen; good step cut style. Source: Gary Eisenberg, Knoxville, Tennessee.

Spinel — specimen 0041

— Weight: 0.10 ct; size: 3.05 | 3.04 | 1.91 mm; shape: round; colour: light violet; strong. Very clean specimen; lightly coloured; good mixed style cut.

Featured

Gadolinite-(Y)

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

Specimen figured

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