A platinum diamond single-stone ring. The cushion-shape

A platinum diamond single-stone ring. The square-shape diamond, to the tapered shoulders and plain band. Estimated diamond weight 0.40ct, I-J colour, SI clarity. Hallmarks for Birmingham, 2001. Weight

(1345) A platinum diamond single-stone ring. The square-shape diamond, with tapered shoulders. Diamond weight 0.47ct, stamped to band, estimated K-L colour, SI2-P1 clarity. Hallmarks for London. Ring

A platinum diamond single-stone ring. The rectangular-shape diamond, with tapered shoulders. Diamond weight 0.40ct, stamped to band, estimated I-J colour, SI clarity. Hallmarks for London, 2006. Ring

A platinum diamond single-stone ring. The rectangular-shape diamond, to the knife-edge sides and plain band. Diamond weight 0.34ct, stamped to band, estimated K-L colour, P1 clarity. Hallmarks for Bir

A platinum diamond single-stone ring. The square-shape diamond, with tapered band. Estimated diamond weight 0.25ct, H-I colour, SI clarity. Hallmarks for Birmingham. Ring size K 1/2. Weight 2,9gms. Ov

DIAMOND SINGLE-STONE RING Set with a cushion-shaped diamond, between bifurcated brilliant-cut diamond-set shoulders, mounted in platinum, maker's mark, London hallmark, ring size approx. O Footnotes:

VINTAGE LADY'S PLATINUM AND 14K WHITE GOLD RING, cushion-shape top set with a central synthetic sapphire surrounded by 16 mine cut or antique single cut melee diamonds, not marked. Diamonds: approxima

Platinum and Old European Cut Diamond Ring, ca. 1925, set within a curved, pierced cushion shape mounting are (3) old European cut diamonds, the center stone is box-set flanked by (2) bead-set old Eur

No Reserve Price! Grading Results: ___________ Stone Type: Natural Ruby Shape: Cushion Mixed Carat: 1.27 ct Color: Red Clarity: Lightly Included Treatment: Indications of heating Grading Resul

Ceylon Sapphire, Diamond, Platinum Ring, circa 1950 Stones: Cushion-shaped sapphire weighing 6.80 carats; European, transitional, and single-cut diamond

Certified Lab Grown 2 1/5 ctw Cushion Diamond Engagement Ring with Marquise Shape Side Accents Platinum Style: Side Stone Engagement Ring Total Carat Weight: 2 1/5 ctw Centerstone Carat Wt: 2.0 Center

Certified Lab Grown 1 1/5 ctw Cushion Diamond Engagement Ring with Marquise Shape Side Accents Platinum Style: Side Stone Engagement Ring Total Carat Weight: 1 1/5 ctw Centerstone Carat Wt: 1.0 Center

A platinum diamond single-stone ring. The brilliant-cut diamond, to the tapered shoulders and plain band. Estimated diamond weight 2.35cts, I-J colour, P3 clarity. Hallmarks for London, 2004. Weight 5

A platinum diamond single-stone ring. The brilliant-cut diamond, with tapered shoulders. Diamond weight 0.33ct, stamped to band, estimated H-I colour, SI clarity. Hallmarks for London. Ring size L1/2.

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 platinum diamond single-stone ring. The brilliant-cut diamond, to the asymmetric shoulders. Estimated diamond weight 0.30ct, I-J colour, SI2-P1 clarity. Hallmarks for Birmingham. Ring size N. Weight

A platinum diamond single-stone ring. The brilliant-cut diamond collet, with tapered shoulders. Diamond weight 0.16ct, stamped to band, estimated H-I colour, P1 clarity. Hallmarks for London. Weight 3

A mid 20th century 18ct gold and platinum diamond single-stone ring. The brilliant-cut diamond collet, to the tapered shoulders and plain band. Estimated diamond weight 0.45ct, J-K colour, P1. Weight

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

DIAMOND SINGLE-STONE RING, 1884 The cushion-shaped diamond, mounted in 18 carat gold, diamond approx. 4.90cts, UK hallmark, ring size approx. P (leading edge) For further information on this lot pleas

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

TIFFANY & CO. - an 18ct gold citrine single-stone ring. The cushion-shape citrine, to the plain band. Signed Tiffany & Co. Hallmarks for London. Ring size M. Weight 7gms. Overall condition good. Minor

A diamond single-stone ring. The rectangular-shape diamond, weighing 4.73cts, to the tapered shoulders and plain band. Accompanied by report number 20022002, dated 11th February 2015, from AnchorCert,

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