An Art Deco American single stone blue zircon ring, c.1930

An Art Deco American single stone blue zircon ring, c.1930,
with a synthetic sapphire and diamond mount. A circular mixed cut blue zircon, claw set to the centre with a row of calibré French cut sapphires, milligrain set to each shoulder. A pierced bombé form head, milligrain set with graduated eight cut diamonds with hand engraved feather guards to an hand engraved laurel shank, plain at the base. Marked PLAT. Possible remnants of a signature. Head 17 x 13mm, 5.69g.
Finger size O
Sold for £420

Condition report:
Facet edge wear to the zircon visible under 10X magnification.