A VERY FINE ALEXANDRITE AND DIAMOND CLUSTER RING in platinum, set with an oval cut alexandrite of

A VERY FINE ALEXANDRITE AND DIAMOND CLUSTER RING in platinum, set with an oval cut alexandrite of 1.18 carats in a cluster of round brilliant cut diamonds, the stylised shoulders set with further roun

NO RESERVE - A FINE HELIODOR AND DIAMOND RING in platinum, set with an oval cut heliodor (golden beryl) of 10.08 carats between two clusters of round and baguette cut diamonds, stamped Pt850, size M /

Centering an oval cut alexandrite weighing approximately 0.86 carat; flanked by triangle brilliant cut diamonds; total diamond weight approximately 0.80 carat; set in a Van Cleef & Arpels platinum mou

A YELLOW SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with an oval cut yellow sapphire of 2.50 carats in a cluster of round brilliant cut diamonds, further diamonds accenting the shoulders all t

NO RESERVE - A RUBY AND DIAMOND CLUSTER RING in platinum, set to the centre with an oval cut ruby in a cluster of old cut and rose cut diamonds, no assay marks, size T / 9.5, 4.4g.

AN UNHEATED RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with an oval cut ruby of 1.42 carats within a border of round cut diamonds, stamped 18ct & Plat, size M / 6, 2.5g. Accom

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with an oval cut sapphire, in a halo of old mine cut diamonds, to stylised shoulders, stamped with maker's mark and 18CT & PLA

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with an oval cut blue sapphire of 1.36 carats within a border of round cut diamonds, with further diamonds set to the shoulder

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 ANTIQUE SAPPHIRE AND DIAMOND CLUSTER RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an oval cut sapphire within a halo of round cut diamonds, stamped 18ct Plat, size N / 6.5, 2

A BURMA NO HEAT SAPPHIRE AND DIAMOND CLUSTER RING in platinum, set with an oval cabochon sapphire of 7.44 carats in a double border of old cut diamonds, the diamonds all totalling 1.4-1.5 carats, full

A FINE DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with a principal old European cut diamond of 0.72 carats within a border of single cut diamonds, stamped 18ct Plat, size N1/2 / 7, 2.7

A FINE RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold and white gold, set with an oval cut ruby of 7.05 carats in a cluster of old cut diamonds, the diamonds all totalling 1.3-1.4 carats, stamped 1

Ladies platinum alexandrite and diamond ring featuring a oval mixed cut alexandrite weighing approx. 0.92ct. , changing from a from a yellowish green to a pinkish brown color (GIA Grading Report). Sur

14k yellow gold ring set with a oval cut 15.18ct Diaspore, 1.68ct Alexandrite, .033 ct round yellow diamonds and .013 ct round white diamonds. Ring size 7. Approx. overall weight 7.9 grams. Please see

Elevate your jewelry collection with this exquisite 900 platinum ring. A mesmerizing 0.73-carat oval-cut alexandrite, known for its color-changing properties, takes center stage. Surrounding this rare

This is a certified and appraised genuine Alexandrite and natural diamond ring set in platinum.  The 1.49 carat oval, faceted yellowish-green Alexandrite is prong-set in a platinum ring with a ha

Sapphire diamond ring Delicate platinum ring set with oval faceted sapphire approx. 0.50 ct. Ring shoulders with leaf ornament and old-cut diamond approx. 0.10 ct. Millegriffes frame settings. 2 g. Ri

Very pretty 14K white gold - Alexandrite and diamond ring. Approximately 0.50 CT center stone - oval cut and bezel set in approximately 0.90 CT TDW. Size 7.5. 7.6 grams.

Platinum ring featuring a rare oval natural alexandrite weighing 2.76 carats with color changing from yellowish green to purplish brown accompanied by GIA Gemological Report #1186440210 set in the cen

Garnet and diamond cluster ring, central oval cut garnet, surrounded by round cut diamonds and diamond set shoulders, mounted in white metal tested as platinum, ring size K1/2, approximate weight 2.5

An 18ct gold sapphire and diamond cluster ring, An 18ct gold sapphire and diamond cluster ring, an oval mixed cut sapphire, approximately 5.40mm x 8.00mm, claw set to the centre of a surround of round

1970's Platinum Black Opal & Diamond Ring. The ring is centrally set with a large oval cabochon cut black peacock opal. It exhibits a fine blue to green harlequin play of color. It weighs approx. 5.99

Fine beautiful Art-Deco ring, apparently made in France during the 1920s/30s, made of Platinum (bears a wolf head hallmark) and set in its center with a large oval cut red gemstone (Ruby?) and with a