This unusual vintage ring is sterling silver.
It features a 3mm square cut amethyst on a purple and blue illusion type metal background.
The background image changes depending on the angle that you're looking at the ring.
The face of this ring measures 7/16ths of an inch north to south with a rise of 4mm off the finger.
This ring is a size 10.
Marks: 925, unknown makers mark
Condition: Excellent vintage