- - Abalone products
- - Shellfish products
- - Shellfish yielding mother-of-pearl.
- - Pearly shellfishes.
- - Shellfish
- - caviar spoon materials
- - Materials from mollusk shells
- - Mother-of-pearls
- - Mother-of-pearl sources
- - Pearly layers
- - Nautilus shell liners
- - Mother-of-pearl materials
- - Pearly linings in mollusks
- - Buttonmakers' materials
- - Button materials
- - Mollusk shell materials
- - Shell liners
- - Button substances
- - Iridescent coatings of some shells
- - Iridescent substances
- - Inner layers of some shells
- - Pearly shells
- - Pearly substances.
- - Layers of shells.
- - Iridescent button materials
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