A rose cut diamond and enamel cluster

A rose cut diamond and enamel cluster,
later mounted as a ring. A central oval Dutch rose cut diamond, claw set to a border of rose cut diamonds in petal shapes, with a royal blue guilloché enamel ground. The cluster later mounted to a plain underbezel and shank. Head 15.1 x 14.50mm, 5.82g.
Finger size P½ - S½ (approximately)
Sold for £480

Condition report:
Cluster plate tested as approximately 18ct gold, bezel tested as approximately 9ct gold, shank as approximately 15ct gold