A platinum aquamarine single-stone ring, with tapered

(1345) A platinum diamond single-stone ring. The square-shape diamond, with tapered shoulders. Diamond weight 0.47ct, stamped to band, estimated K-L colour, SI2-P1 clarity. Hallmarks for London. Ring

A platinum diamond single-stone ring. The rectangular-shape diamond, with tapered shoulders. Diamond weight 0.40ct, stamped to band, estimated I-J colour, SI clarity. Hallmarks for London, 2006. Ring

A platinum diamond single-stone ring. The brilliant-cut diamond, with tapered shoulders. Diamond weight 0.33ct, stamped to band, estimated H-I colour, SI clarity. Hallmarks for London. Ring size L1/2.

A platinum diamond single-stone ring. The square-shape diamond, with tapered band. Estimated diamond weight 0.25ct, H-I colour, SI clarity. Hallmarks for Birmingham. Ring size K 1/2. Weight 2,9gms. Ov

A platinum diamond single-stone ring. The square-shape diamond, to the tapered shoulders and plain band. Estimated diamond weight 0.40ct, I-J colour, SI clarity. Hallmarks for Birmingham, 2001. Weight

A platinum diamond single-stone ring. The brilliant-cut diamond, to the tapered shoulders and plain band. Estimated diamond weight 2.35cts, I-J colour, P3 clarity. Hallmarks for London, 2004. Weight 5

A mid 20th century 14ct gold aquamarine single-stone ring. The rectangular-shape aquamarine, within an openwork gallery, to the tapered shoulders and plain band. Ring size L. Weight 7.9gms.

A platinum diamond single-stone ring. The brilliant-cut diamond collet, with tapered shoulders. Diamond weight 0.16ct, stamped to band, estimated H-I colour, P1 clarity. Hallmarks for London. Weight 3

A platinum diamond single-stone ring. Of bi-colour design, the brilliant-cut diamond, with bar sides and tapered band. Diamond weight 0.33ct, H-I colour, P1 clarity. Hallmarks for London. Ring size O.

A mid 20th century 18ct gold and platinum diamond single-stone ring. The brilliant-cut diamond collet, to the tapered shoulders and plain band. Estimated diamond weight 0.45ct, J-K colour, P1. Weight

A mid 20th century 18ct gold and platinum diamond single-stone ring. Of bi-colour design, the brilliant-cut diamond, with tapered shoulders and single-cut diamond accents. Principal diamond estimated

Vintage ladies' stunning platinum estate ring set to the center with a large rectangular cut aquamarine stone, embellished with a single rectangular cut diamond on each shank. Ring size 6-1/2. Weighs

PLATINUM AND DIAMOND RING ~ SIZE 7, TAPERED SHANK WITH OPENWORK DESIGN FEATURING 0.55CT BRILLIANT ROUND CENTER STONE WITH SIX SINGLE CUT DIAMONDS ON EACH SIDE (APPROX 0.73CT TDW) STAMPED AND TESTED (4

LARGE AQUAMARINE SINGLE STONE RING, in 18 ct. gold. Set with a large aquamarine of approx. 18.79 ct. Size N. 10 grams.

A platinum single stone ring. Brilliant cut diamond in rub-over setting. Diamond: 0.2 ct. Colour H. Size: M. 5. approx. grms.

An 18ct gold aquamarine single-stone ring.Aquamarine calculated weight 9.05cts, based on estimated dimensions of 15.3 by 10.2 by 7.9mms. Hallmarks for Birmingham, 1984. Ring size L1/2. 6.4gms.We offer

A selection of three gem-set rings. To include an early 20th century 18ct gold oval-shape aquamarine single-stone ring, an early 20th century 18ct gold amethyst single-stone ring, together with a moon

Four gem-set dress rings. A 9ct gold opal and ruby cluster ring, a 9ct gold blue paste single-stone ring, an aquamarine single-stone ring, and a sapphire dress ring. Two with hallmarks for 9ct gold. T

A platinum diamond single-stone ring. The brilliant-cut diamond, to the asymmetric shoulders. Estimated diamond weight 0.30ct, I-J colour, SI2-P1 clarity. Hallmarks for Birmingham. Ring size N. Weight

A platinum diamond single-stone ring. The rectangular-shape diamond, to the knife-edge sides and plain band. Diamond weight 0.34ct, stamped to band, estimated K-L colour, P1 clarity. Hallmarks for Bir

(18287) A single-stone diamond ring. The tapered band, to the square setting, with claw-set brilliant-cut diamond. Estimated diamond weight 0.65ct, J-K colour, P2 clarity. Ring size P. Weight 7.9gms.

Platinum setting for a single stone ring accented by six diamonds; weighs approximately .15 ozt; in Good condition.

A mid 20th century platinum and 18ct gold diamond single-stone ring. The circular-cut diamond, with pave-set diamond line sides. Principal diamond estimated weight 0.30ct, I-J colour, P1 clarity. Ring

Cartier Cultured Pearl, Diamond, Platinum Ring Stones: Tapered baguette-cut diamonds weighing a total of approximately 0.45 carat Pearl: Cultured akoya pearl measuring 1