A gentleman's diamond single-stone ring. The old-cut

A gentleman's Edwardian 18ct gold diamond single-stone ring. The old-cut diamond, within an elongated claw setting to the plain band. Estimated diamond weight 0.50ct, I-J colour, P2 clarity. Hallmarks

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

A diamond single-stone ring. The old-cut diamond, with tapered shoulders and plain band. Estimated diamond weight 0.90ct, K-L colour, P1 clarity. Ring size P. Weight 3.6gms.

A diamond single-stone ring. The old-cut diamond, to the openwork shoulders and knife-edge band. Estimated diamond weight 0.60ct, I-J colour, VS2-SI1 clarity. Ring size L. Weight 1.5gms. Overall condi

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

A diamond single-stone ring. The old-cut diamond, with engraved shoulders and tapered band. Estimated diamond weight 0.50ct, H-I colour, VS2-SI1 clarity. Ring size J. Weight 3.3gms.

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 diamond single-stone ring. The old-cut diamond, with plain band. Estimated diamond weight 0.45ct, J-K colour, PI clarity. Ring size L. Weight 1.7gms.

A diamond single-stone ring. The old-cut diamond, with tapered shoulders and band. Estimated diamond weight 0.55ct, J-K colour, P2 clarity. Ring size J. Weight 2.7gms.

A diamond single-stone ring. The old-cut diamond collet, inset to the openwork foliate band. Estimated diamond weight 0.50ct, tinted colour, P1-P2 clarity. Ring size T. Weight 5.6gms.

DIAMOND SINGLE-STONE RING The old brilliant-cut diamond, weighing 10.74 carats, in an 18 carat white and yellow gold setting, London hallmark, ring size P

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

DIAMOND SINGLE STONE RING The old brilliant-cut diamond between single-cut diamond shoulders, principal diamond approx. 1.20cts, ring size approx. R For further information on this lot please visit Bo

A diamond single-stone ring. The old-cut diamond, weighing 1.26cts, to the brilliant-cut diamond surround, gallery and shoulders. Accompanied by a verbal report by AnchorCert stating the principal dia

An early 20th century 14ct gold diamond single-stone ring. The old-cut diamond collet, to the rose-cut diamond foliate shoulders with circular-shape emerald accents. Principal diamond estimated weight

A diamond single-stone ring. The old-cut diamond, weighing 0.71ct, to the floral engraved shoulders and pierced floral sides. Principal diamond estimated tinted colour, SI clarity. Weight 2.4gms.

A diamond single-stone ring. The old-cut diamond, to the plain band. Estimated diamond weight 0.55ct, J-K colour, SI clarity. Weight 3.1gms.

An early 20th century 18ct gold diamond single-stone ring. The old-cut diamond, with scalloped mount and tapered shoulders. Estimated diamond weight 0.50ct, L-tinted colour, P1 clarity. Hallmarks for

(1402) A late Victorian 18ct gold diamond single-stone ring. The old-cut diamond, inset to the plain band. Estimated diamond weight 0.20ct. Hallmarks for London, 1890. Ring size O1/2. Weight 6.8gms.

A late Victorian 18ct gold diamond single-stone ring. The old-cut diamond, star-set to the kite-shape panel, with plain band. Hallmarks for Birmingham, 1892. Ring size J. Weight 2.5gms.

An early 20th century 18ct gold diamond single-stone ring. The old-cut diamond, with openwork surround and grooved shoulders. Estimated diamond weight 0.10ct. Ring size K1/2. Weight 2.7gms. Overall co

A diamond single-stone ring. The old-cut diamond, with single-cut diamond shoulder highlights, to the plain band. Estimated total diamond weight 0.15ct. Weight 1.7gms.

AN IMPORTANT DIAMOND SINGLE-STONE RING The old European-cut diamond weighing 6.94cts within a four-claw setting, to a plain hoop, ring size O Accompanied by a report from the GIA laboratory in America

An early 20th century diamond single-stone ring The old brilliant-cut diamond, weighing 4.03 carats, between tapered single-cut diamond three-stone shoulders, French assay marks(Ring size: N)