These abalone shell buttons are made from Brown Lip Australian abalone shells. They have an old-fashioned ridged look on the back of the button and are smooth on the front. They are about 1/16" in thickness.
When exported from the USA, abalone shells are subject to USFWS and require an export permit.
These buttons are made from shells that are a by-product of the food industry.
Made in South Korea from Australian Shells.