A Sri Lankan colour-change sapphire single-stone ring, with single-cut diamond sides.With report

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 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 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,

DIAMOND SINGLE-STONE RING The step-cut diamond, weighing 6.30 carats, ring size J Footnotes: Accompanied by a report from GIA stating that the diamond is G colour, SI1 clarity. Report number 22255108

DIAMOND SINGLE-STONE RING The brilliant-cut diamond, weighing 5.36 carats, within a six-claw setting, ring size M Footnotes: Accompanied by a report from GIA stating that the diamond is F colour, SI2

DIAMOND SINGLE-STONE RING The brilliant-cut diamond, weighing 5.73 carats, in a brushed mount, ring size M Footnotes: Accompanied by a report from GIA stating that the diamond is I colour, SI1 clarity

DIAMOND SINGLE-STONE RING The brilliant-cut diamond, weighing 4.11 carats, ring size M Footnotes: Accompanied by a report from GIA stating that the diamond is K colour, SI1 clarity. Report number 2191

DIAMOND SINGLE STONE RING The brilliant-cut diamond, weighing 2.81 carats, ring size N Footnotes: Accompanied by a report from GIA stating that the diamond is K colour, VS2 clarity. Report number 2195

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

An 18ct gold sapphire and diamond single-stone ring. The marquise-shape pink sapphire, with circular-cut diamond line shoulders. Estimated total diamond weight 0.20ct. Hallmarks for Birmingham. Ring s

A mid Victorian 18ct gold old-cut diamond single-stone ring.Diamond estimated weight 0.90ct, based on estimated dimensions of 8.9 by 7.7 by 2.1mms, estimated I-J colour, P1 clarity.Hallmarks for Birmi

An old-cut diamond single-stone ring.Estimated diamond weight 2cts, tinted colour, P2 clarity.French assay mark. Ring size M1/2. 3.7gms.

An old-cut diamond single-stone ring.Estimated diamond weight 1.20cts, H-I colour, P2 clarity.Stamped plat.Ring size J1/2. 3.5gms.

A late Georgian gold old-cut diamond single-stone ring, with later Victorian band.Estimated diamond weight 0.30ct, I-J colour, P1 clarity. Ring size Q. 2.6gms.

A rose-cut diamond single-stone ring.Rose-cut diamond estimated I-J colour, VS2-SI1 clarity.Stamped 585.Ring size N1/2. 2.2gms.

An 18ct gold brilliant-cut diamond single-stone ring. Estimated diamond weight 0.25ct, H-I colour, P1 clarity. Hallmarks for London. Ring size K1/2. 2.6gms.

A diamond single-stone ring The cut-cornered step-cut diamond, between baguette-cut diamond shoulders Accompanied by GIA report no. 76023832, dated 28th September 2018, stating that the emerald-cut di

A diamond single-stone ring. The brilliant-cut diamond, with tapered shoulders. Estimated diamond weight 5cts, I-J colour, P1-P2 clarity. Ring size M1/2. Weight 5.8gms.

(546813-5-A) A diamond single-stone ring. The brilliant-cut diamond, to the slightly tapered band. Estimated diamond weight 1.40cts, H-I colour, SI clarity. Ring size L. Weight 2.6gms.

A diamond single-stone ring. The old-cut diamond, weighing 2.04cts, to the foliate shoulders and plain band. Accompanied by report number 20024488, dated 30th June 2015, from AnchorCert stating that t

An 18ct gold diamond single-stone ring. The rectangular-cut diamond, weighing 1.21cts, to the tapered band. Accompanied by report number 2176913551, dated 26th August 2014, from the Gemological Instit

A diamond single-stone ring. The old-cut diamond, with tapered shoulders and plain band, Estimated diamond weight 1.15cts, tinted colour, VS clarity. Ring size L. Weight 2.3gms. Overall condition good