Features: Made of 925 sterling silver, skin-friendly and comfortable to wear Inlaid with 3A zircon using high cutting standards, giving it a diamond-like shine Measures 18x6mm with a 3mm aperture Lightweight at approximately 2.1gSpecifications: Material: 925 Silver Zircon Platinum Plating Aperture: 3 mm (0.12 inches) Weight: 2.1G (0.07 ounces)Package Includes: 1 x 925 Sterling Silver Platinum Plated Smart Heart Diy Beads