An Arts and Crafts single stone opal ring, with an oval

A single stone black opal ring, A single stone black opal ring, an oval cabochon opal, approximately 9.00mm x 13.00mm, claw set to a plain collet, to trifurcated shoulders, and a plain shank. Tested a

An Art Deco single stone black opal ring, An Art Deco single stone black opal ring, with diamond set shoulders. A circular tallow cabochon cut black opal, milligrain set to each shoulder, to a ridged

An opal single-stone ring. The oval opal doublet collet, with polished surround, to the trifurcated shoulders. Ring size T. Weight 4gms.

A gold single stone black opal ring, A gold single stone black opal ring, a round cabochon black opal, damaged, rub set to tapering, textured, flat section band, tested as approximately 18ct gold, 11.

A five stone opal ring, A five stone opal ring, five graduated oval cabochon opals all claw set to a scalloped gallery, to solid shoulders and a 'D' section band. Tested as approximately 9ct gold, 3.2

Two gold gem set rings, comprising a gold garnet single stone ring, with an oval cut garnet, into raised tapered shoulders and a plain flat shank, tested as approximately 9ct gold, and a 9ct gold cubi

Beautifully crafted Serpentine nest of 3 oval opal stones complimented by a singles round Diamond. Ring Material: 14K Yellow Gold Ring S

Two rings. To include a 9ct gold buckle ring, together with an oval opal cabochon single-stone ring. One with hallmarks for London. Total weight 10.3gms.

Two 18ct gold diamond and gem-set rings. To include an oval opal cabochon single-stone ring with brilliant-cut diamond stepped sides, together with a ruby and diamond cluster ring. Estimated total dia

oval opal measuring approximately 18 x 14mm; gross weight 12.7g; length: 1 3/4in; size 6

An 18ct gold opal and diamond three-stone ring. The oval opal cabochon line, with single-cut diamond double spacers, to the scrolling sides and plain band. Hallmarks for London, 1961. Weight 4.9gms.

LADY'S OPAL, DIAMOND & RUBY 14KT YELLOW GOLD OVAL FASHION RING :Set with: 1 oval green opal, stone dimesions 10 x 8 mm. 20 single cut diamonds, 0.30 carats. 26 round cut natural rubies, 0.52 carats. S

Art Deco Ceylon Sapphire, Diamond, Platinum Ring Stones: Oval-shaped Ceylon sapphire weighing 13.12 carats; single-cut diamonds weighing a total of approximately 1&period

An Edwardian 18ct gold opal and diamond seven-stone ring. The graduated oval opal cabochon line, with single-cut diamond line spacers. Estimated total diamond weight 0.20ct. Hallmarks for Birmingham,

A selection of four 9ct gold gem-set dress rings. To include an amethyst single-stone ring with colourless gem asymmetric shoulders, an oval opal cabochon and sapphire cluster ring, together with two

The yellow gold ring prong set with three oval opals, the center stone enclosed by four single cut diamonds, hallmarked 14K. Size 7.25. Condition: light expected wear.

Art Deco Platinum, Opal & Diamond Ringcentered on a prong set, oval black opal (14.97 x 10.48 x 5.03 mm) with three single cut diamonds on either side weighing approximately .11 total carat (H-I color

Comprising a pair of Edwardian oval opal, natural seed pearl stud earrings; An oval opal and transitional-cut diamond foliate ring, approx. .26 ct. TW.; La Triomphe oval opal, single-cut diamond, appr

Sterling citrine bracelet and ring. The bracelet is hinged and decorated with organic cutwork and gold accents. Set with a single large oval citrine stone. 7 1/2". Marked STS KARIS. Also included is a

An 18ct gold diamond single-stone ring. The oval old-cut diamond, with tapered band. Estimated diamond weight 1ct, tinted colour, SI clarity. Hallmarks for Birmingham, 1991. Ring size N. Weight 2.6gms

An amethyst single-stone ring. The oval amethyst cabochon, with rope-twist surround and shoulders. Ring size M.

A 9ct gold blue john single-stone ring. The oval blue john cabochon, within a rope-twist surround. Hallmarks for Sheffield. Ring size K. Weight 8.8gms. Overall condition good. Minor surface scratches/

A turquoise single-stone ring. The oval turquoise cabochon, with a curved bar surround and plain band. Estimated dimensions of turquoise 16.3 by 12.5 by 7.1mms. Ring size O. Weight 12.6gms.

A turquoise single-stone ring. The oval turquoise cabochon, with a rope-twist surround and crossover sides, to the bifurcated band. Ring size N. Weight 8.2gms. Overall condition good. Minor surface sc