An opal and diamond cluster ring. The circular opal

OPAL AND DIAMOND CLUSTER RING The circular opal cabochon within a cushion-shaped diamond surround, within closed back settings, diamonds approx. 1.20cts total, ring size approx. L½

An opal and diamond cluster ring. The circular opal cabochon, with single-cut diamond surround. Estimated total diamond weight 0.40ct. Ring size M1/2. Weight 3.6gms.

A selection of four 9ct gold gem-set dress rings. To include a circular opal cabochon and sapphire cluster ring, a multi gem and diamond dress ring, together with two further rings. Three with hallmar

NO RESERVE, OPAL AND DIAMOND CLUSTER RING. opal in the center , surrounded by diamonds totalling approx. 0.75 ct. size K. 5.2 grams.

OPAL AND DIAMOND CLUSTER RING The oval opal cabochon, within a brilliant-cut diamond surround, ring size approx. M

OPAL AND DIAMOND CLUSTER RING The oval opal cabochon, in a double tiered, brilliant-cut diamond surround, one diamond deficient, several possible diamond simulants, ring size approx. K (sizing band)

A mid 20th century 18ct gold and platinum, opal and diamond cluster ring. The opal cabochon, within a single-cut diamond surround. Estimated total diamond weight 0.10ct. Ring size O. Weight 2.6gms. Ov

18ct gold hallmarked black opal & diamond cluster ring: Outstanding ring supplied by Boodles, ring size T, 24 small but high grade diamonds. Opal measures 16mm x 11mm.

An opal and diamond cluster ring. The oval-shape opal, within a vari-cut diamond surround and shoulders. Ring size N. Weight 7.7gms. Overall condition fair to good. Some surface scratches/ wear, disco

18K gold opal and diamond mounted cluster ring. Fiery opal measures 11.6 x 8.9mm. Marked 18K. Approximate ring size 8.25.

An opal and diamond cluster ring. The oval opal cabochon, with brilliant-cut diamond scalloped surround and similarly-cut diamond line shoulders. Estimated total diamond weight 0.15ct. Ring size N. We

This is a vintage ladies ring made by the Fine Jewelers Guild (FJG). Rendered in fine 18K yellow gold, this biomorphic ring features a cluster of six Australian opal cabochons with striking red, green

An opal and diamond cluster ring. The oval opal cabochon, with rose-cut diamond surround. Ring size L. Weight 3.7gms.

BOULDER OPAL AND DIAMOND CLUSTER RING The oval boulder opal within a radiating surround set with brilliant-cut diamonds, ring size approx. N

An 18ct gold opal and diamond cluster ring. The oval opal cabochon, within a single-cut diamond surround, to the tapered band. Estimated total diamond weight 0.35ct. Hallmarks for London, 1978. Ring s

An Edwardian opal and diamond ring. The graduated circular opal cabochon line, with old-cut diamond double spacers, to the scrolling sides and plain band. Hallmarks for Birmingham, 1908. Weight 2.6gms

METAL: 18k Gold. MEASUREMENTS: Ring size - 6, ring top is 25mm x 22mm. GEMSTONES: Opals, Diamonds approx. 0.24ctw. MARKED: CR18k. WEIGHT: 11.3 grams.Gemstones have not been graded for color and clarit

METAL: 14k Gold. MEASUREMENTS: Ring size 7.75, top is 28mm x 19mm. GEMSTONES: Opals, Diamond approx. 0.25ct. MARKED: 585 14k. WEIGHT: 7 grams.Gemstones have not been graded for color and clarity ,and

4.00ct Natural Australian Opal cluster ring Rays of Orange Reds & Some Blue Greens 6 X 5 mm .50ct Natural Rubies Rounds and full cuts. 14kt. yellow gold 23mm diameter of ring wide depth: 18mm 7.7 gram

An early 20th century gold, opal and diamond cluster ring. The heart-shape opal cabochon, with old-cut diamond surround. Estimated total diamond weight 0.45ct. Ring size N. Weight 3.6gms.

An opal and diamond cluster ring claw-set with an oval cabochon opal, in a border of old round-cut diamonds, unmarked(Ring size: U)

LARGE OPAL AND DIAMOND CLUSTER RING, Set with a large opal of approx. 6.92 ct. Surrounded with diamonds totalling approx. 0.52 ct. L. head 20.5 mm. Size N. 5.7 grams.

AN OPAL AND DIAMOND CLUSTER RING in 18ct white gold, set with a cabochon opal of 9.50 carats in a border of round brilliant cut diamonds, the band accented by further diamonds all totalling 0.65 carat

AN OPAL AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cabochon opal in a cluster of rose cut diamonds, French import mark, size O / 7, 3.9g.