An early 20th century lady's platinum and 18ct gold single-cut diamond cocktail watch, with

TIFFANY & CO. - a lady's early 20th century platinum diamond cocktail watch. The circular-shape white dial with black Arabic numerals and minute track, with single-cut diamond double surround, similar

A ladies early 20th century platinum diamond manual wind cocktail watch. The white dial with black Arabic numerals and minute track, with old and single-cut diamond bezel and expandable bracelet. Esti

A lady's early 20th century diamond manual wind cocktail watch. The circular-shape silvered dial and black Arabic numerals, within a single-cut diamond bezel, to the associated 9ct gold fancy-link bra

Five gold gem-set rings. To include an early 20th century platinum and 18ct gold single-cut diamond three-stone crossover ring, an early 20th century 18ct gold and platinum synthetic ruby dress ring,

An early 20th century platinum and 18ct gold diamond dress ring. The three graduated circular-cut diamonds, within a single-cut diamond scalloped millegrain border. Estimated total diamond weight 0.20

An early 20th century platinum diamond cocktail watch. The circular-shape cream dial, with black Arabic numerals, within a single-cut diamond border, to the circular and rose-cut diamond pierced brace

An early 20th century platinum and 9ct gold diamond cocktail watch. The silvered dial, with vari-cut diamond bezel and geometric lugs, to the later 9ct gold adjustable mesh strap. Estimated total diam

A lady's early 20th century diamond cocktail watch. The circular dial, with single-cut diamond bezel and geometric lugs, to the replacement black cord bracelet. Estimated total diamond weight 0.65ct.

A lady's early 20th century diamond manual wind cocktail watch. The tonneau dial with Arabic numerals, old and single-cut diamond openwork sides and black suede bracelet. Estimated total diamond weigh

NO RESERVE - A SAPPHIRE AND DIAMOND CLUSTER RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an oval cut blue sapphire within a border of single cut diamonds, maker's mark SH&Co, st

AN ART DECO RUBY AND DIAMOND DRESS RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, the rectangular face set with a step cut ruby accented by single cut diamonds, stamped 18ct Plat, size M /

A lady's mid 20th century platinum diamond manual wind cocktail watch. The rectangular-shape cream dial, with black Arabic numerals, to the single-cut diamond surround and old-cut diamond geometric op

CORTEBERT - a lady's mid 20th century gold diamond manual wind cocktail watch. The brilliant-cut diamond openwork front, opening to reveal a circular-shape cream dial, to the brilliant and single-cut

This is an antique Continental European ladies wristwatch dating to the early 20th century. Rendered in fine platinum, this Art Deco watch is studded with full and single cut diamonds. VS clarity and

An early to mid 20th century platinum and 18ct gold old-cut diamond floral dress ring.Estimated total diamond weight 1.20cts, H-I colour, SI1-P1 clarity.Ring size O1/2. 3.3gms.

An early 20th century platinum and 9ct gold blue zircon and single-cut diamond cluster ring.Zircon calculated weight 1.96cts, based on estimated dimensions of 6.85 by 4.5mms.Estimated total diamond we

An early 20th century 18ct gold diamond single-stone ring. The old-cut diamond, with scalloped mount and tapered shoulders. Estimated diamond weight 0.50ct, L-tinted colour, P1 clarity. Hallmarks for

A mid 20th century platinum and 18ct gold diamond cluster ring. The single-cut diamond floral cluster, with single-cut diamond sides, to the plain band. Estimated total diamond weight 0.15ct. Weight 2

Two early 20th century 18ct gold diamond rings. To include a single-cut diamond floral cluster ring, together with a diamond five-stone ring. Estimated total diamond weight 0.10ct. Weight 3.7gms. Over

An early 20th century 18ct gold diamond single-stone ring. The old-cut diamond, with openwork surround and grooved shoulders. Estimated diamond weight 0.10ct. Ring size K1/2. Weight 2.7gms. Overall co

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

An early 20th century 18ct gold diamond five-stone ring. The graduated single-cut diamond line, with scrolling shoulders. Estimated total diamond 0.10ct. Hallmarks for Birmingham, 1914, partially indi

An early 20th century 18ct gold zircon and diamond cluster ring. The circular-shape zircon, within a single-cut diamond surround, with tapered shoulders. Estimated total diamond weight 0.15ct. Ring si

An early 20th century 18ct gold, ruby and diamond ring. The cushion-shape ruby cross, with single-cut diamond sides and foliate shoulders. One synthetic ruby replacement. Estimated total diamond weigh