Product description Size: Approximately 2.2cm in diameter Color: mixed color Material: Resin Package content: 100pcs artificial luminous stone. 1.【 Eco-friendly Material】: Resin material, no harm. 2.【 Glow in the Dark】: Put the pebbles under light when you receive it, about 20 minutes later, pebbles can glow if you put it in dark. 3.【Unique Shape】: All stones come into different shape, like conch shell, very funny for decoration. 4.【 Mixed Color】: Each pack comes in different color mixed, enrich your decoration. 5.【 Perfect Glow Stones】: Valentines Day Home Decoration , Line a walkway, edge a flower bed or fill a planter with these glowing stones that will glow in the dark after being exposed to daylight.