Designer Rigoberto 14k and Sterling Silver Onyx cabochon dome ring Watches I've dated it 1920's made

I've dated it 1920's made in Switzerland

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It measures about 6” inner circumference elastic with 10mm beads

Hallmarked DT 925

MEASUREMENTS:  Approximately 7-1/8” (18

Designer Rigoberto 14k and Sterling Silver Onyx cabochon dome ring Watches I've dated it 1920's madeNOS Designer Rigoberto chunky domed ring with 14k yellow bezel set Onyx on sterling silver. It's fully hallmarked shown in the pictures. Ring size 6. 5 sizable upon request. It's about 21. 9mm wide with 15mm in diameter domed onyx cabochon. Super cool ring with ribbed sides and lots of gold around the onyx. This is a highly collectible ring by designer Rigoberto new old stock never worn. We are jewelers all of our items are professionally inspected