A golden sapphire set ring, the unmarked 18ct yellow

AN ANTIQUE STAR SAPPHIRE AND DIAMOND DRESS RING in 18ct yellow gold and silver, set with a round cabochon star sapphire of 9.63 carats within a border of round cut diamonds, unmarked, size N / 6.5, 9.

An 18ct yellow gold and sapphire ring set with a mixed oval-cut sapphire in a crossover-style mount, with diamond accents to shoulders, size P, 4.42 grams, together with a yellow metal and hematite pe

18ct yellow gold sapphire & diamond ring set in platinum. Size O, weight 3.0g.

A VINTAGE SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with a cabochon sapphire and an old cut diamond of 1.47 carats, accented by further old mine cut diamonds, French assay marks for 18 carat

AN ANTIQUE EDWARDIAN SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with round cut sapphires and rose cut diamonds, full British hallmarks for Birmingham 1918, size R1/2 / 9, 1.9g.

An early to mid 20th century diamond and sapphire crossover ring set with an old cushion-cut diamond of approximately 0.45 carats, and an old round-cut sapphire, set in unmarked yellow metal (tests as

SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with a cabochon sapphire in a cluster of round cut diamonds, stamped 750, size O / 7, 4.0g.

A SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with a cabochon sapphire in a border of round and single cut diamonds, British hallmarks, size R / 8.5, 5.4g.

A SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with a round cabochon sapphire of approximately 7.18 carats, accented by trios of rose cut diamonds, stamped 750, size N / 6.75, 7.1g. 

A FRENCH SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with an oval cut sapphire of approximately 3.57 carats accented by old cut diamonds, French assay marks, size J1/2 / 5, 10.6g. 

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut sapphire of 1.53 carats in a cluster of old cut diamonds, each shoulder set with a further old cut diamond, the diamonds a

AN ANTIQUE SAPPHIRE AND DIAMOND DRESS RING in 18ct yellow gold, set with an oval cut sapphire of approximately 1.70 carats in a border of round brilliant, old and single cut diamonds, the stepped shou

AN ANTIQUE SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with three oval cut sapphires accented by pairs of old cut diamonds, D&F maker's mark, marked indistinctly, size K1/2 / 5.5, 3.6g

A VINTAGE SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut sapphire of 0.65 carats, in a border of round brilliant cut diamonds, full British hallmarks for 18ct gold, size K

A SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with a round cut sapphire of 0.42 carats in a border of single cut diamonds, stamped 18CT, size O / 7, 2.0g.

A SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut sapphire of 1.67 carats in a cluster of round brilliant cut diamonds, British hallmarks, size O / 7, 4.6g.

A VINTAGE SAPPHIRE AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut sapphire of 0.65 carats, in a border of round brilliant cut diamonds, full British hallmarks for 18ct gold, size K

A SAPPHIRE AND DIAMOND THREE STONE RING in 18ct yellow gold, set with a marquise cut sapphire between two marquise cut diamonds, full British hallmarks, size L / 5.75, 3.6g. 

AN ANTIQUE EDWARDIAN SAPPHIRE AND DIAMOND RING, 1904 in 18ct yellow gold, set with three sapphires accented by old cut diamonds, leading to stylised shoulders, full British hallmarks partly obscured d

AN ANTIQUE SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with alternating cushion cut sapphires and old cut diamonds, British hallmarks for 18ct gold, size O / 7, 3.1g.

AN ANTIQUE EDWARDIAN SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with three oval cut sapphires and four old cut diamonds, full British hallmarks for Birmingham 1904, size P / 7.75, 3.2g.

AN ANTIQUE VICTORIAN SAPPHIRE AND DIAMOND FIVE STONE RING, 1896 in 18ct yellow gold, set with three sapphires alternating with two old mine cut diamonds, leading to stylised shoulders, full British ha

AN ANTIQUE SAPPHIRE AND DIAMOND RING in 18ct yellow gold, set with three round cut sapphires accented by rose cut diamonds, partially rubbed British hallmarks for 18ct gold, size M / 6, 3.5g.

AN ANTIQUE SAPPHIRE AND DIAMOND FIVE STONE RING in 18ct yellow gold, set with three round cut sapphires and two old cut diamonds, full British hallmarks for 18ct gold, size M / 6.25, 2.8g.