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A German 18k gold and Andamoca opal ring. - image-1

A German 18k gold and Andamoca opal ring. - image-2

A German 18k gold and Andamoca opal ring.

Signet ring set with an oval Adamoca opal cabochon (c. 16.26 x 11.40 mm). Hallmarks: Fineness 750, maker's mark "PGH". Bezel 1.4 x 1.8 cm. Ring size 55. Weight 20.42 g.
Paul Günter Hartkopf, Düsseldorf, c. 1973.

Provenance

Acquired from the goldsmith's studio in the 1970s.

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Lot 595 Dα

A German 18k gold and Andamoca opal ring.

Provenance