Here you have a single 25.5 mm spiral that is suitable for gemstones and crystals. They are 28mm in height unstretched (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 Gold 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