This charming sand dollar button measures approximately 17mm, including the 2mm inner diameter loop (shank) on the back. Cast from Britannia pewter and plated with an antiqued holf plated finish, these sand dollars are EU Nickel Compliant and made in the USA. Use to make beautiful button-clasp closures on DIY bracelets, or use as focals and charms on necklaces, bracelets and more! TierraCast completed rigorous testing to determine how well these buttons hold up in the laundry and dry cleaning process. We are thrilled to report that all finished hold up beautifully through the washer and dryer cycles. Chemically antiqued finishes are also fine with dry cleaning, but the -AS Antique Silver Plating and -AG Antique Gold Plating should not be dry cleaned. So go for it. Try TierraCast buttons on your favorite garments!