Pre-loved, NOGU Purple Grapes Stretch Bracelet Size: Stretch Their silver tag is marked .925 Sterling Silver. The grapes surrond this strech bracelet. The decorative beads are actually Firefly Glass that they specifically design. The mushroom is there genuine lamp work hand-blown glass and when placed under a light source they glow!!! This a super dainty bracelet. The first picture shown is the bracelet glowing after UV flashlight hits it. If placed for longer periods of time the beads will glow longer. Great gift for the nature enthusiast or those who like wine!