A 1970s 18ct gold diamond single-stone ring. The

An 18ct gold diamond single-stone ring. The rectangular-shape diamond, to the tapered shoulders and plain band. Estimated total diamond weight 5-5.25cts, K-L colour, P1 clarity. Hallmarks for Birmingh

An 18ct gold diamond single-stone ring. The marquise-shape diamond, weighing 3.23cts, with pear-shape diamond sides and tapered shoulders. Accompanied by report number 2655741333, dated 18th May 2006,

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

An 18ct gold diamond single-stone ring. The brilliant-cut diamond, to the tapered sides and plain band. Estimated diamond weight 1ct, tinted colour, SI2-P1 clarity. Hallmarks for Sheffield. Weight 3.6

An 18ct gold diamond single-stone ring. The brilliant-cut diamond, with tapered band. Estimated diamond weight 0.75ct, H-I colour, VS2-SI1 clarity. Hallmarks for London. Ring size M. Weight 8.4gms. Ov

An 18ct gold diamond single-stone ring. The brilliant-cut diamond, within a raised four-claw setting, to the plain band. Diamond weight1.01ct, stamped to band, estimated J-K colour, P2 clarity. Hallma

An 18ct gold diamond single-stone ring. The brilliant-cut diamond, with tapered band. Diamond weight 2cts, tinted colour, P1-P2 clarity. Hallmarks for Sheffield. Ring size N1/2. Weight 3.7gms.

An 18ct gold diamond single-stone ring. The marquise-shape diamond, to the tapered shoulders and plain band. Estimated diamond weight 1.10ct, L-tinted colour, SI2-P1 clarity. Hallmarks for Birmingham.

An 18ct gold diamond single-stone ring. The brilliant-cut diamond, with calibre-cut diamond line sides. Principal diamond estimated weight 0.75ct, K-L colour, SI clarity. Hallmarks for Sheffield. Ring

An 18ct gold diamond single-stone ring. The brilliant-cut diamond, to the tapered shoulders and plain band. Estimated diamond weight 0.65ct, K-L colour, P1 clarity. Hallmarks for Birmingham. Weight 3g

An 18ct gold diamond single-stone ring. The oval old-cut diamond, with tapered band. Estimated diamond weight 1ct, tinted colour, SI clarity. Hallmarks for Birmingham, 1991. Ring size N. Weight 2.6gms

An 18ct gold diamond single-stone ring. The rectangular-shape diamond, with tapered shoulders. Estimated diamond weight 0.50ct, H-I colour, VS clarity. Hallmarks for Sheffield. Ring size J1/2. Weight

An 18ct gold diamond single-stone ring. The brilliant-cut diamond, to the tapered shoulders and plain band. Estimated diamond weight 0.50ct, H-I colour, SI clarity. Hallmarks for Birmingham. Weight 3.

An 18ct gold diamond single-stone ring. The square-shape diamond, with tapered shoulders. Estimated diamond weight 0.45ct, J-K colour, VS clarity. Hallmarks for Birmingham. Ring size K. Weight 3gms.

An 18ct gold diamond single-stone ring. The old-cut diamond, inset to the tapered band. Estimated diamond weight 0.50ct, H-I colour, SI2-P1 clarity. Hallmarks for London, 1999. Ring size Q. Weight 7.8

An 18ct gold diamond single-stone ring. The millennium-cut diamond, with plain band. Diamond weight 0.57ct, stamped to band, estimated J-K colour, VS clarity. Hallmarks for Birmingham. Ring size I. We

An 18ct gold diamond single-stone ring. The brilliant-cut diamond, with tapered shoulders. Estimated diamond weight 0.70ct, K-L colour, P2-P3 clarity. Hallmarks for Birmingham, 1997. Ring size N1/2. W

An 18ct gold diamond single-stone ring and a loose diamond. To include a brilliant-cut diamond single-stone ring, together with a loose square-shape diamond. Estimated total diamond weight 0.55ct, J-K

An 18ct gold diamond single-stone ring. The old-cut diamond, with foliate gallery and plain band. Estimated diamond weight 0.50ct, J-K colour, P1-P2 clarity. Hallmarks for London, 1989. Ring size J. W

A mid 20th century 18ct gold diamond single-stone ring. The brilliant-cut diamond, with rose-cut diamond sides. Estimated brilliant-cut diamond weight 0.50ct, I-J colour, P1 clarity. Ring size R. Weig

An 18ct gold diamond single-stone ring. The brilliant-cut diamond, to the tapered sides. Estimated diamond weight 0.50ct, tinted colour, SI clarity. Hallmarks for Birmingham. Ring size M1/2. Weight 5g

An 18ct gold diamond single-stone ring. The brilliant-cut diamond, with similarly-cut diamond line band. Estimated total diamond weight 0.50ct, principal diamond estimated H-I colour, VS clarity. Hall

An 18ct gold diamond single-stone ring. The circular-cut diamond, with vari-cut diamond gallery and tapered shoulders. Total diamond weight 0.40ct, stamped to band, principal diamond estimated I-J col

An 18ct gold diamond single-stone ring. The brilliant-cut diamond, with tapered shoulders. Diamond weight 0.33ct, stamped to band, estimated J-K colour, P1-P2 clarity. Hallmarks for London. Ring size