Vintage Black Onyx Signet Ring

This is a vintage 9ct yellow gold signet ring. Crafted in the 1960s, this signet features a rectangular black onyx face and is finished with plain shoulders and an unembellished band. 

Condition: Used (Very Good)
Weight: 1.9 grams
Ring Size: M
Face Dimensions: 10mm x 4mm
Hallmarked: Yes (London 1966)
Box: Plain Gift Box