A sapphire and brilliant-cut diamond 'Fantasia' ring, by Roberto Coin.Estimated total diamond weight

ROBERTO COIN - an 18ct gold diamond band ring. The pave-set brilliant-cut diamond panel, with plain band. Signed R Coin. Estimated total diamond weight 2.95ct. Hallmark for Birmingham, 2010. Ring size

Two gem-set dress rings. To include a yellow sapphire five-stone ring and a brilliant-cut diamond dress ring. Estimated total diamond weight 0.55ct. Weight 11gms.

An 18ct gold sapphire and brilliant-cut diamond three-stone ring, sapphire estimated weight 2ct, estimated total diamond weight 0.40ct, estimated L-tinted colour, VS2-SI1 clarity, hallmarks for Birmin

A sapphire and brilliant-cut diamond cluster ring.Sapphire calculated weight 1.58cts, based on estimated dimensions of 7.8 by 5.9 by 4.1mms.Estimated total diamond weight 0.50ct, H-J colour, SI1-P1 cl

A sapphire, ruby and brilliant-cut diamond snake ring, with pave-set diamond crest and brilliant-cut diamond eyes, estimated total diamond weight 0.40ct, ring size P, 3.8g

A sapphire and diamond half eternity ring. The alternating circular-shape sapphire and brilliant-cut diamond line, with baguette-cut diamond spacers. Estimated total diamond weight 1ct. Ring size R1/2

A sapphire and diamond dress ring. The kite-shape sapphire, with brilliant-cut diamond scalloped surround, and baguette-cut diamond shoulders. Estimated total diamond weight 0.70ct. Ring size M. Weigh

A sapphire and diamond cluster ring. The oval-shape yellow sapphire, with brilliant-cut diamond surround. Estimated total diamond weight 0.45ct. Ring size M1/2. Weight 6.8gms.

A sapphire and diamond three-stone ring. The oval-shape sapphire and brilliant-cut diamonds, inset to the tapered band. Estimated total diamond weight 0.20ct. Ring size I1/2. Weight 7.6gms.

A sapphire and diamond ring. Designed as a rectangular-shape sapphire, with brilliant-cut diamond shoulders and plain band. Estimated total diamond weight 0.20ct. Ring size J. Weight 7.2gms.

AN 18 CARAT WHITE GOLD SAPPHIRE AND DIAMOND THREE STONE RING a round-cut sapphire between round brilliant-cut diamonds. Estimated total diamond weight 0.65ct, ring size M, 4.9 grams Good condition. T

A SAPPHIRE AND DIAMOND THREE STONE RING, a round-cut sapphire between round brilliant-cut diamonds. Estimated total diamond weight 0.65ct, ring size M1/2, 3.3 grams Accompanied by a Gemological Report

A SAPPHIRE AND DIAMOND THREE STONE RING, a round-cut sapphire between round brilliant-cut diamonds. Estimated total diamond weight 0.60ct, ring size O1/2, 5.0 grams

A moonstone, sapphire and diamond dress ring. The moonstone cabochon, with calibre-cut sapphire sides and brilliant-cut diamond surround. Estimated total diamond weight 0.45ct. Ring size O. Weight 5.5

A platinum graduated sapphire three-stone ring, with brilliant-cut diamond shared surround.Sapphire total weight 0.64ct.Total diamond weight 0.13ct.Hallmarks for London, 2011. Ring size M. 5.9gms.

A multi-gem and diamond dress ring. Comprising an oval-shape sapphire, ruby and green sapphire line, with brilliant-cut diamond bar spacers. Estimated total diamond weight 0.10ct. Ring size O. Weight

An 18ct gold sapphire and diamond cluster ring. The rectangular-shape sapphire, with brilliant cut diamond surround and grooved shoulders. Sapphire weight 1.36cts. Total diamond weight 0.59ct. Hallmar

A sapphire and diamond three-stone ring. The rectangular-shape yellow sapphire, with brilliant-cut diamond sides. Estimated total diamond weight 0.35ct, tinted colour, SI2-P2 clarity. Ring size N1/2.

A sapphire and diamond cluster ring. The oval-shape sapphire, with brilliant-cut diamond surround. Estimated total diamond weight 8.6 by 6.5 by 5mms. Estimated total diamond weight 0.30ct. Stamped 750

An 18ct gold sapphire and diamond three-stone ring. The oval-shape sapphire, with brilliant-cut diamond sides, to the tapered band. Estimated total diamond weight 0.40ct, Hallmarks for London, 1981. R

An 18ct gold sapphire and diamond dress ring. The three slightly graduated circular-shape sapphires, with brilliant-cut diamond double spacers and trefoil terminals. Estimated total diamond weight 0.1

An 18ct gold sapphire and diamond three-stone ring. The rectangular-shape pink sapphire, with brilliant-cut diamond sides, to the plain band. Estimated total diamond weight 0.25ct. Hallmarks for Londo

An 18ct gold sapphire and diamond dress ring. The oval-shape yellow sapphire, with brilliant-cut diamond trefoil sides, to the plain band. Estimated total diamond weight 0.20ct. Hallmarks for Birmingh

An 18ct gold sapphire and diamond three-stone ring. The oval-shape sapphire, with brilliant-cut diamond sides, to the tapered band. Estimated total diamond weight 0.30ct, H-I colour, SI clarity. Impor