A platinum brilliant-cut diamond single-stone ring, with similarly-cut diamond line shoulders.With

An 18ct gold diamond single-stone ring. The brilliant-cut diamond, with similarly-cut diamond line band. Estimated total diamond weight 0.50ct, principal diamond estimated H-I colour, VS clarity. Hall

A diamond single-stone ring. The brilliant-cut diamond, with similarly-cut diamond line sides, to the plain band. Principal diamond weight 0.22ct, stamped to band, estimated L-tinted colour, VS clarit

A diamond single-stone ring. The brilliant-cut diamond, to the similarly-cut diamond line sides and millegrain border. Principal diamond estimated weight 0.55ct, J-K colour, VS2-SI1 clarity. Weight 3.

A diamond single-stone crossover ring. The brilliant-cut diamond, to the similarly-cut diamond line asymmetric shoulders and tapered band. Principal diamond estimated weight 0.30ct, H-I colour, VS cla

(1920) Two gold diamond rings. To include an 18ct gold brilliant-cut diamond single-stone ring, with similarly-cut graduated line sides and a 9ct gold diamond crossover band ring. Total diamond weight

A mid 20th century platinum diamond three-stone ring. The graduated brilliant-cut diamond line, with single-cut diamond line sides, to the plain band. Estimated total diamond weight 0.55ct, I-J colour

A mid 20th century platinum and 18ct gold diamond three-stone ring. The graduated brilliant-cut diamond line, to the single-cut diamond asymmetric sides and plain band. Estimated total diamond weight

A DIAMOND SINGLE-STONE RING, BY BULGARI The central brilliant-cut diamond weighing 0.79ct within a four-claw setting, to a gallery pavé-set with similarly-cut diamonds, mounted in platinum, signe

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

A platinum diamond three-stone ring. The brilliant-cut diamond line, to the openwork gallery and tapered band. Estimated total diamond weight 1.05cts, H-K colour, SI2-P1 clarity. Hallmarks for Birming

An 18ct gold diamond single-stone ring. The brilliant-cut diamond, with calibre-cut diamond line sides. Principal diamond estimated weight 0.75ct, K-L colour, SI clarity. Hallmarks for Sheffield. Ring

A diamond single-stone ring. The brilliant-cut diamond, with square-shape diamond line sides, to the angular shoulders. Principal diamond estimated weight 0.25ct, H-I colour, VS clarity. Ring size M.

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 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

An 18ct gold diamond three-stone ring. The graduated brilliant-cut diamond line, with similarly-cut diamond line shoulders. Estimated total diamond weight 0.80ct, principal diamonds estimated H-I colo

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 diamond three-stone crossover ring. The brilliant-cut diamond line, to the single-cut diamond asymmetric shoulders and plain band. Principal diamonds estimated total weight 0.60ct, K-tinted colour,

A diamond three-stone crossover ring. The brilliant-cut diamond line, to the single-cut diamond asymmetric sides and plain band. Estimated total diamond weight 0.60ct. Weight 3gms.

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 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

DIAMOND SINGLE-STONE RING Set with a brilliant-cut diamond, between similarly-cut diamond shoulders, principal diamond approx. 1.50cts, ring size approx. K½

DIAMOND SINGLE-STONE RING Set with a brilliant-cut diamond, weighing 3.53 carats, between similarly-cut diamond shoulders, ring size approx. J½

TIFFANY & CO. - a platinum and diamond ring. The brilliant-cut diamond, with graduated similarly-cut diamond line sides. Signed Tiffany & Co. Accompanied by Tiffany & Co. certificate stating the princ

An 18ct gold diamond single-stone ring. The square-shape diamond, between brilliant-cut diamond tapered line sides. Principal diamond estimated weight 0.20ct, H-I colour, SI2-P1 clarity. Hallmarks for