A DIAMOND SOLITAIRE ENGAGEMENT RING in 18ct yellow gold, set with a radiant cut diamond of 5.63

A DIAMOND SOLITAIRE ENGAGEMENT RING in 18ct yellow gold, set with a radiant cut diamond of 5.63 carats, British hallmarks for 18ct gold, size N / 6.5, 7.0g. Accompanied by a facsimile gemmological rep

A DIAMOND SOLITAIRE RING in 18ct yellow gold, set with a marquise cut diamond of 1.10 carats, full British hallmarks, size N / 7, 3.0g.

A DIAMOND SOLITAIRE RING in 18ct yellow gold, set with an old cut diamond of 0.45 carats, obscured British hallmarks for London, 1997, size O / 7, 3.4g.

A SOLITAIRE DIAMOND RING in 18ct yellow gold, set with an old cut diamond of 1.13 carats, stamped 18ct, size N.5 / 6.75, 2.8g.

A SOLITAIRE DIAMOND RING in 18ct yellow gold, set with an old cut diamond of approximately 1.43 carats, full British hallmarks for Birmingham 1970, size L / 5.75, 2.4g.

A SOLITAIRE DIAMOND RING in 18ct yellow gold, set with a princess cut diamond of 0.82 carats, full British hallmarks, size L / 6, 2.9g.

NO RESERVE - A SOLITAIRE DIAMOND GYPSY RING in 18ct yellow gold, set with an old cut diamond of approximately 0.90 carats, stamped 18CT, size R / 8.5, 7.3g.

A SOLITAIRE DIAMOND ENGAGEMENT RING in 18ct white gold, set with a marquise cut diamond of 1.01 carats, British hallmarks for 18ct gold, size M / 6, 3.3g.

A SOLITAIRE DIAMOND RING in 18ct yellow gold, set with a round brilliant cut diamond of 0.50 carats, British hallmarks, size G.5 / 3.75, 2.6g.

A SOLITAIRE DIAMOND ENGAGEMENT RING in 18ct white gold, set with a round brilliant cut diamond of 0.67 carats, stamped 750, size O1/2 / 7.25, 3.6g.

A SOLITAIRE DIAMOND RING in 18ct yellow gold and platinum, set with a transitional cut diamond of 0.62 carats, with further diamonds to the shoulders, stamped 18ct Plat, size N / 6.5, 2.3g.

A SOLITAIRE DIAMOND RING in 18ct yellow gold and platinum, set with an old cut diamond of approximately 0.67 carats, stamped PLAT, size P1/2 / 7.75, 3.2g.

A 1.23 CARAT SOLITAIRE DIAMOND ENGAGEMENT RING in 18ct white gold, set with a round brilliant cut diamond of 1.23 carats accented by further diamonds to the band, stamped 18CT, size R / 8.5, 3.7g.

AN ANTIQUE SOLITAIRE DIAMOND RING, EARLY 20TH CENTURY in 18ct yellow gold, set with an old cut diamond of 0.32 carats, stamped 18c, size N / 6.75, 2.0g.

SOLITAIRE DIAMOND RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an old cut diamond, between geometric shoulders, stamped 18ct Plat, size K / 5.25, 2.2g.

A SOLITAIRE DIAMOND DRESS RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an old cut diamond of 0.51 carats within a tapering band, stamped 18ct Plat, size K / 5.25, 2.4g.

A vintage ladies classic diamond solitaire engagement ring. Features a 18k yellow gold band with 6 prong round brilliant cut RBC diamond set in white gold. Diamond measures approximately 1.2 carats. M

An 18ct yellow gold and solitaire diamond ring set with a round brilliant-cut diamond of approximately 1.07 carats, approximate colour and clarity H/I, I1, eight-claw set in yellow gold, hallmarks rub

An 18ct yellow gold and solitaire diamond ring set with a round brilliant-cut diamond of approximately 0.24 carats, approximate colour and clarity J/K, SI1/2, size L, 3.6 grams.

A LADIES 18CT GOLD 6.02ct PRINCESS CUT SOLITAIRE CHAMPAGNE DIAMOND RING set in 18ct yellow gold claws flanked by heart shaped diamonds on an 18ct gold shank, total weight 7g. Size L/M (Diamond measure

An 18ct yellow gold solitaire ring set with a round brilliant-cut diamond of approximately 0.42 carats, together with GIA certificate stating colour and clarity of E, VVS2, in a crossover-style setti

A VINTAGE CITRINE AND DIAMOND ENGAGEMENT RING AND WEDDING BAND SUITE in 18ct yellow gold, the engagement ring set with a central oval cut citrine between two single cut diamonds, with plain wedding ba

An 18ct yellow gold and solitaire diamond ring the round-cut diamond rubover set in a white gold mount, the stone approximately I/J, I1/2, size L 4.2 grams.

Lovely vintage solitaire engagement ring. Ring is 14K yellow gold with a single prong set approx. 1ct round brilliant cut natural diamond solitaire. Inside the band is marked 14K JTC for Jewelry Trade