An emerald and diamond dress ring. Of bi-colour design,

A diamond dress ring. Of bi-colour design, the two brilliant-cut diamond interlinked curved lines, with tapered band. Estimated total diamond weight 0.25ct. Ring size M. Weight 3.4gms. Overall conditi

A gentleman's diamond dress ring. Of bi-colour design, the marquise-shape diamond collet, to the ridged shoulders and tapered band. Estimated diamond weight 0.65ct, I-J colour, P1 clarity. Weight 11.2

A gentleman's diamond dress ring. Of bi-colour design, the square-shape diamond line, to the raised shoulders and tapered band. Estimated total diamond weight 0.40ct, I-J colour, VS1-SI1 clarity. Weig

A diamond dress ring. The bi-colour, open band, with brilliant-cut diamond accent grooved terminals. Estimated total diamond weight 0.20ct. Stamped 750. Approximate ring size M. Weight 10.2gms.

A gentleman's 18ct gold diamond ring. Of bi-colour design, the brilliant-cut diamond, inset to a stepped panel, with grooved shoulders and tapered band. Estimated diamond weight 0.20ct, J-K colour, P1

A gentleman's 9ct gold diamond ring. Of bi-colour design, the brilliant-cut diamond square-shape panel, to the grooved shoulders. One diamond deficient. Estimated total diamond weight 1ct. Hallmarks f

A diamond cluster ring. Of bi-colour design, the vari-shape rose-cut diamond mosaic, to the textured mount and band. Maker's mark for Yossi Harari. Total diamond weight 1.85cts, estimated G-H colour,

An 18ct gold diamond band ring. Of bi-colour design, the brilliant-cut diamonds, inset to the plain band. Estimated total diamond weight 0.30ct. Import marks for London. Ring size L. Weight 6.9gms. Ov

A diamond cluster ring. Of bi-colour design, the rose-cut diamond, within a diamond point and engraved openwork surround. Foreign marks. Ring size P. Weight 4.2gms.

A diamond single-stone ring. Of bi-colour design, the old-cut diamond, with tapered shoulders. Estimated diamond weight 0.45ct, K-L colour, SI2-P1 clarity. Ring size J1/2. Weight 2.7gms.

A diamond three-stone ring. Of bi-colour design, the brilliant-cut diamond line, with single-cut diamond shoulders. Estimated total diamond weight 0.35ct. Ring size L1/2. Weight 2.7gms.

THEO FENNELL - an 18ct gold beryl and diamond 'Rainforest' ring. Of bi-colour design, the circular green beryl cabochon, hinged to reveal a frog, to the foliate and pave-set diamond band. Signed Fenne

An 18ct gold diamond crossover ring. Of bi-colour design, comprising seven brilliant-cut diamond crossover bands, with tapered sides. Total diamond weight 0.88ct. Hallmarks for Birmingham. Ring size O

A tsavorite garnet and diamond clover ring. Of bi-colour design, the pave-set tsavorite garnet and diamond clover, with chevron shoulders. Estimated total diamond weight 0.60ct. Ring size M. Weight 10

A diamond flexible ring. Of bi-colour design, comprising a series of textured batons and panel, with brilliant-cut diamond scattered accents. Estimated total diamond weight 0.25ct. Ring size N. Weight

An 18ct gold diamond band ring. Of bi-colour design, the brilliant-cut diamond openwork scrolling foliate motif, to the scroll engraved sides and polished back panel. Estimated total diamond weight 0.

An 18ct gold diamond and 'coloured' diamond cluster ring. Of bi-colour design, the brilliant-cut 'green' diamond, with similarly-cut 'green' diamond and diamond stepped surround. Estimated total colou

A mid 20th century gold diamond buckle ring. Of bi-colour design, the textured and tapered band, with diamond buckle motif. Ring size L. Weight 4.5gms.

EMERALD AND DIAMOND DRESS RING Of reeded, bicoloured design, set with a rectangular step-cut emerald and brilliant-cut diamond accents, ring size approx. J½

A platinum diamond single-stone ring. Of bi-colour design, the brilliant-cut diamond, with bar sides and tapered band. Diamond weight 0.33ct, H-I colour, P1 clarity. Hallmarks for London. Ring size O.

A mid 20th century 18ct gold and platinum diamond single-stone ring. Of bi-colour design, the brilliant-cut diamond, with tapered shoulders and single-cut diamond accents. Principal diamond estimated

A diamond single-stone ring. Of bi-colour design, the brilliant-cut diamond, to the stepped shoulders and plain band. Diamond weight 0.20ct, stamped to the band, estimated I-J colour, P1 clarity. Hall

A diamond full-circle eternity ring. Of bi-colour openwork design, the brilliant-cut diamond kite-shape line, to the textured bar sides. Estimated total diamond weight 0.10ct. Ring size L. Weight 6.7g

ANTONIAZZI CHIAPPE (attributed to) - a sapphire and diamond dress ring. The circular sapphire cabochon, with graduated baguette-cut diamond line sides, to the bi-colour tapered band. Indistinctly sign