Art3d Mother of Pearl Mosaic Tiles are crafted from natural mother-of-pearl materials using eco-friendly techniques, ensuring safety, non-toxicity, and long-lasting color retention. Each tile features a natural pearl-like luster and unique textures, adding an elegant touch to any space. Backed with PVC foam board,a thickened waterproof structure, these tiles are designed to withstand both moisture and heat, performing well in environments from 104°F to 140°F.Installation is quick and hassle-free: simply use tile adhesive or glue—no grout or specialized tools required. Note: Because natural shell is used, slight differences in gloss and tone between tiles are normal and add to the product’s natural beauty.