The pearly internal layer of certain mollusk shells, used to make decorative objects.
The pearly internal layer of certain mollusk shells, used to make decorative objects.
珠母层某些软体动物壳内似珍珠的层，用来做装饰物
The pearly internal layer of certain mollusk shells, used to make decorative objects.
珠母层某些软体动物壳内似珍珠的层，用来做装饰物