1. Material: 925 silver + nano opal + glass + platinum plating 2. The texture and color of Opal’s magic colors make the jewelry more beautiful, clear, fresh and refined. 3. Made of 925 sterling silver, it is skin-friendly, comfortable and healthy to wear. 4. Transparent and clear glass material, showing beautiful light and bright luster 5. Weight: 2.6 grams 6. Height and width: 14x12mm 7. Aperture: 4.5mm 8. All products are measured manually. There may be slight errors in the actual product specifications and weights. The actual product shall prevail 9. Note: only beads, bracelet not included