A COLLECTION OF FIVE GEM-SET RINGS, 19TH CENTURY AND LATER

A COLLECTION OF FIVE GEM-SET RINGS, 19TH CENTURY AND LATER, comprising; a turquoise and diamond cluster ring, set with a cabochon turquoise to the centre within a border of old mine-cut diamonds, in yellow gold, size L 1/2, an opal doublet and diamond three-stone ring, set with an oval opal doublet to the centre between two old circular-cut diamonds, in yellow gold, stamped 18, size T, a sapphire and diamond cluster ring, set with a circular-cut sapphire within a border of circular-cut diamonds, in 18ct yellow and platinum, stamped 18ct and PLAT, size M, an Art Nouevau aquamarine and yellow gold ring, set with a pear-shaped aquamarine in pierced foliate decorated yellow gold, size J, and a sapphire and diamond panel ring, set to the centre with an oval-cut sapphire within a surround of circular-cut sapphires, within a graduated circular-cut diamond set border, in yellow gold, size Q