Inside Diameter: .25 inch. Made in US by Tierracast. Silver plated over lead-free pewter. 94-5727-12. Measurements Height: 13.25mm Width: 10mm Loop ID: 2mm Hole ID: 6mm The My Valentine Necklace includes the following Tierracast components: Floral Heart, Oasis Bail, Oval Jump Ring, Petal Beadcap, Heirloom Clasp Set, Swarovski 6mm white pearls.