A TOURMALINE AND DIAMOND RING set with an octagonal cut tourmaline of 2.97 carats in a border of old

A TOURMALINE AND DIAMOND RING set with an octagonal cut tourmaline of 2.97 carats in a border of old cut diamonds totalling 0.72 carats, no assay marks, size M / 6, 5.4g.

A diamond and tourmaline cluster ring set with an emerald-cut tourmaline, within a silver border of old rose-cut diamonds, with yellow metal shank (tests as gold), size K 1/2, 3 grams.

A FINE PAIR OF RED / PINK TOURMALINE AND DIAMOND EARRINGS in white gold, each set with an octagonal step cut pink tourmaline within a geometric border set with old and rose cut diamonds, the pink tour

A CHROME TOURMALINE AND DIAMOND RING in 18ct yellow gold, set with a cushion cut chrome green tourmaline of 12.76 carats in a stylised border of round brilliant cut diamonds, partial British hallmarks

A FINE ART DECO GREEN TOURMALINE AND DIAMOND BROOCH / PENDANT in platinum, set with an octagonal step cut green tourmaline of 13.50 carats within two concentric octagonal borders of round cut diamonds

NO RESERVE - A COLOMBIAN EMERALD AND DIAMOND RING, CIRCA 1945 in 18ct yellow gold, set with an octagonal cut emerald of 1.31 carats in a scrolling border set with two old round cut diamonds, Swedish a

A FINE ANTIQUE PINK TOURMALINE AND DIAMOND RING, 19TH CENTURY in yellow gold and silver, set with a cushion cut pink tourmaline of 10.50 carats within a cluster of old cut diamonds all totalling 2.5-2

A WATERMELON TOURMALINE AND DIAMOND CLUSTER RING set with a fancy cut watermelon tourmaline, in a border of round brilliant cut diamonds, the diamonds all totalling 1.2-1.3 carats, no assay marks, siz

A FINE ART DECO PINK TOURMALINE AND DIAMOND RING in 18ct white gold, set with two rectangular step cut pink tourmalines of 1.78 and 1.32 carats, the pierced openwork shoulders set with old cut diamond

A GREEN TOURMALINE AND DIAMOND RING set with a cushion cut green tourmaline of 13.47 carats, the stepped shoulders set with round cut diamonds, no assay marks, size O / 7, 7.9g.

A TOURMALINE AND DIAMOND RING set with a cushion cut green tourmaline of 13.20 carats between trios of round cut diamonds, unmarked, size M / 6, 8.3g.

PAIR OF GREEN TOURMALINE AND DIAMOND EARRINGS each set with an octagonal cut green tourmaline in a border of rose cut diamonds, unmarked, 1.0cm, 4.3g.

A COLOMBIAN EMERALD AND DIAMOND RING set with a step cut emerald of 1.14 carats in a border of old cut diamonds, the band set with further old and round brilliant cut diamonds, no assay marks, size O

A PINK TOURMALINE AND DIAMOND RING in platinum, set with an oval cut pink tourmaline of 2.02 carats, with stylised shoulders set with marquise and round cut diamonds, stamped Pt900, size L1/2 / 6, 6.6

A RUBELLITE TOURMALINE AND DIAMOND RING set with a central pear cut rubellite tourmaline of 2.86 carats, accented by round brilliant cut diamonds to the band, stamped G14K, size N / 6.5, 2.3g.

White Gold, Green Tourmaline, and Diamond Ringcentering on a prong set oval cut green tourmaline weighing approximately .70 carat, the X-motif shoulders set with baguette and tapered baguette cut diam

A tourmaline and diamond cluster ring claw-set with a reddish-pink oval-cut tourmaline, in a double border of round brilliant-cut diamonds, to a plain shank, mounted in 18ct gold(Ring size: R/S)

A BURMA NO HEAT SAPPHIRE AND DIAMOND RING set with a cushion cut blue sapphire of 4.18 carats, within a graduated border of old cut and round cut diamonds, no assay marks, size N / 6.75, 4.0g. Accompa

AN EMERALD AND DIAMOND RING in 18ct white gold, set with an octagonal cut emerald of 2.33 carats in a border of round brilliant cut diamonds, accented by foliate details set with further round brillia

A PINK TOURMALINE AND DIAMOND RING in 18ct yellow gold, set with an oval cut pink tourmaline of 2.36 carats, the band set with two marquis cut diamonds both totalling 0.24 carats, stamped K18, size K

A PINK TOURMALINE AND DIAMOND DRESS RING in platinum, set with an oval-shaped fancy cut pink tourmaline of 13.95 carats, the trefoil shoulders and shank accented with round cut diamonds, no assay mark

A VINTAGE GREEN TOURMALINE AND DIAMOND DRESS RING in 18ct yellow gold, set with a step cut green tourmaline of 2.11 carats, between round brilliant cut diamonds, stamped 18K, size O / 7.25, 3.8g.

14 karat white gold solitaire-style ring with one round cut tourmaline, approximately 2.30 carats, accompanied by a 14 karat white gold ring guard set with six full-cut round diamonds [J-L/VS], total

A CEYLON NO HEAT SAPPHIRE AND DIAMOND DRESS RING set with a cushion cut blue sapphire of 4.10 carats, within a rectangular border set with old cut and baguette cut diamonds, the diamonds all totalling