The price of pearl tiles is primarily driven by the substrate material, shell type, and chip thickness. High-quality tiles typically use natural freshwater or saltwater shells (like White Mop or Black Lip) bonded to a ceramic, mesh, or magnesium oxide board base. Ensure a standard thickness of 2mm to 8mm; thinner tiles are more fragile but cheaper, while thicker tiles offer better structural integrity for flooring applications. Always verify the seamless splicing technology to ensure minimal grout lines.