Pearloid
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Pearloid is a plastic that is intended to resemble mother of pearl. It is commonly used in making musical instruments, especially for pickguards, electric guitar inlays, and accordions.[1]
Pearloid is produced by swirling together chunks of celluloid in a solvent, then curing, which gives it a mother of pearl effect.[2] It is sliced and bonded to or inlaid in other materials, such as the wood of guitar necks.[2]