This is a very cool vintage thin and stackable band ring with a patterned profile on one side and on the top. It was designed as a stackable ring, the perfect finishing touch for your ring stack. It is 1.3mm wide by 1.5mm deep.
The ring size is 7.75 US. It can be sized but sizing will disturb the pattern.
In excellent condition, it is marked 14k. Carefully tested, approximate weight 1 gram. In excellent condition with very light wear.