Here are 6 buttons that coordinate. 4 are gold tone metal with shank backs. The half rounds match and are gold plastic with molded shank backs. They are 3/4 inch diameter. Flat diameters are 2 at 1/2, 1 at 5/8, and 1 at 7/8 inches.
Please note that button purchases can be combined to save on shipping. At least 3 lots,often more, will go for the one shipping rate. I automatically give refunds when lots are combined.