Vintage 9k yellow gold black onyx signet ring from Birmingham c 1981. The black onyx measures 11.5 mm x 10 mm.
Excellent vintage condition
Ring size: 9.5-9.75 resizable
Weight: 3.2 grams
Hallmarks: 375 for 9k, anchor for Birmingham, 'g' for 1981, "AJ Co" maker's mark
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