A synthetic colour change sapphire single-stone ring.

A synthetic colour-change sapphire single-stone ring. The oval-shape synthetic colour-change sapphire, with rope-twist surround and openwork gallery. Ring size M. Weight 13.8gms.

A synthetic colour change sapphire single-stone ring. The oval-shape synthetic colour change sapphire, to the openwork gallery and plain band. Ring size L 1/2. Weight 7.4gms. Overall condition good. M

A smoky quartz pendant and two gem-set rings. To include a smoky quartz single-stone pendant, a turquoise and paste three-stone ring, together with a synthetic colour-change sapphire single-stone ring

A SYNTHETIC COLOUR-CHANGE SAPPHIRE RING a round synthetic colour-change sapphire in a claw setting. Marked '22CT', ring size J1/2 4.4 grams Stone slightly loose in setting, shank resized.

Three gem-set rings. To include a mid 20th century synthetic sapphire single-stone ring, a graduated diamond five-stone ring, together with a graduated diamond three-stone crossover ring. One AF. Esti

A VINTAGE SYNTHETIC COLOUR CHANGE SAPPHIRE DRESS RING in yellow gold, set with a round cut synthetic colour change sapphire, no assay marks, size P / 7.5, 7.1g.

A VINTAGE SYNTHETIC COLOUR CHANGE SAPPHIRE DRESS RING in yellow gold, set with an emerald cut synthetic colour change sapphire, accented by foliate motifs to the mount, marked indistinctly, size N / 6

AN EARLY 20TH CENTURY SYNTHETIC COLOUR-CHANGE SAPPHIRE AND DIAMOND CLUSTER RING a cushion-cut synthetic colour-change sapphire within a milgrain border of round-cut diamonds. Estimated total diamond w

COLOUR-CHANGE SAPPHIRE AND DIAMOND RING The cushion-shaped colour-change sapphire between single-cut diamond shoulders, one diamond deficient, ring size approx. M Footnotes: Accompanied by a report fr

A selection of three gem-set rings. To include a snake ring with ruby eye detail, a sapphire single-stone ring, together with a synthetic sapphire and ruby buckle ring. Two with hallmarks for 9ct gold

Stamped (partially legible) and tested 14k white gold setting with approximately 7.8 carat (15.3mm x 10.8mm x 5.4mm) synthetic color change sapphire. Stone is blue in natural light and purple in incan

18 Karat Yellow Gold and Stone Ring set with one round cut Color-Change Synthetic Sapphire; size 7-½, weighs 7.6 grams

18 Karat Yellow Gold and Stone Ring channel set with one oval cut Color Change Synthetic Sapphire, approximately 10.51 carats; size 7-¼, weighs 7.5 grams

Collection of Four Men's Synthetic Stone, Diamond, 10k Gold Rings. Including one synthetic star sapphire, diamond, 10k white gold ring, size 11 1/4; one synthetic color change sapphire, 10k yellow gol

A COLOUR CHANGE SAPPHIRE AND DIAMOND CLUSTER RING in 18ct white gold, set with a central cushion cut sapphire of 5.13 carats, encircled by a border of single cut diamonds, later British import marks,

Two gem-set rings. To include an opal and sapphire cluster ring, together with a 9ct gold synthetic opal single-stone ring. One with hallmarks for Birmingham. Total weight 8.4gms.

Marked 10K gold ring set with approximately 1.7 carat synthetic color change sapphire. Signed TM. Size 6-1/2. 3/8" wide. 1.8 dwt. Chip to stone near one prong. MH/EK IMPORTANT: Before bidding, please

14KY. 3-stone Gypsy ring features (1) 6.0mm round synthetic blue Sapphire, chipped, flanked by (2) round old cut Diamonds, approx. 1.0ctw, Colour: HI Clarity VS to SI. Size 9+. 10.5gtw with

A Sri Lankan sapphire single-stone ring. The cushion-shape sapphire, weighing approximately 4cts, to the tapered band. Accompanied by report number 5775-1960, dated 11th May 2015, from the Gemmologica

A Ceylon sapphire single-stone ring. The oval-shape Sri Lankan sapphire, to the openwork scrolling shoulders and plain band. Accompanied by report number 5776-6508, dated 2nd of August 2016 from Gemmo

A sapphire single-stone ring. The circular-shape green sapphire, with openwork scrolling shoulders. Ring size N. Weight 3.5gms.

A synthetic colour-change sapphire pendant. The oval-shape synthetic colour change sapphire, within an openwork surround, with an 18ct gold curb-link chain. Chain with hallmarks for Birmingham. Length

A selection of three gem-set rings. To include a circular-shape sapphire stepped cluster ring, an oval-shape sapphire single-stone ring, together with an oval-shape rock crystal single-stone ring. Tot

Three 9ct gold sapphire and diamond rings. To include a sapphire and diamond cluster ring, a heart-shape sapphire single-stone ring, together with a sapphire and diamond floral cluster ring. Estimated