Diamond Half Eternity Ring Cabuchon marked inside the shank with

marked inside the shank with a makers mark

it's much more unusual than the usual gold and silver

This signet ring is hallmarked Birmingham 1893

The circular plaque is finely crafted in platinum with a delicate looped gallery to the reverse

Diamond Half Eternity Ring Cabuchon marked inside the shank withA vintage diamond half eternity ring, crafted in 18ct white gold. The ring is set with square cut diamonds totalling approximately 0. 25 carats, arranged in a refined channel setting with delicate millegrain detailing. The interior of the shank is marked 750, with the makers mark SC and 0. 25. Dating to circa 1990. The head of the ring is 3. 5mm north to south Current Ring Size: L Weight: 3. 2 grams.