Black opal and diamond ring, 1920s. Black opals are a particularly prized variety of opal, primarily found in Australia, and are so-called because their plays of colour flash dramatically against a dark background. This navette-shaped cabochon, carved from a single piece of black opal, throws out a kingfisher-like palette of deep indigo, azure and green colour flashes, in a display that illuminates the entire surface of the stone. The navette-shaped mount follows its outline beautifully, contrasting the deep body colour of the central stone with a light, sparkling border of circular-cut diamonds. Opals are relatively soft stones, but the secure collet setting of this opal allows it to cope perfectly with occasional wear.
Place Of Origin |
United Kingdom |
Stone Type |
Black opal: Approx. 3.40 carats total Diamonds: Approx. 0.50 carats total |
Stone Dimensions |
Central opal: 15mm x 8.8mm x 4.5mm Height of setting: 6.5mm |
Metal Type |
Platinum, 18ct white gold |
Date Of Manufacture |
1920 - 1925 |
Period Of Manufacture |
Art Deco |
Condition |
Excellent |
Signs Of Wear |
Minor wear commensurate with age |
Band Size |
UK L ½ / US 6 (complimentary re-size available) |
Weight |
6.18 grams (gross) |