Here you have 12 x 25.5 mm spirals that are suitable for gemstones and crystals. They are 28mm in height (including the bail) and 25.5mm at the widest point.
The spiral can be stretched to accomodate a gem twice its size
Perfect for all crystals, gemstones & minerals
All the metal used to create these spirals is sterling silver plated, nickel free wire. It contains an anti-tarnish finish and beacuse it is nickel free it is hypo-allergenic, making it suitable for sensitive skin