Corvidae Antique has dated this piece to the Edwardian era.

The ring is in good solid antique condition; the openwork gallery at the back of the mount has a section missing (see photos), but this is not noticeable when the ring is worn and is cosmetic rather than structural.
Stamped inside: 7972 HS 18CT PLAT.
Size K (UK), approximately 5 (US). The flower head is 7mm in diameter.
Weight: 1.8g.
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Corvidae Antique has dated this piece to the Edwardian era.
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