10mm Half Round Transparent Buttons and 13mm Flat Buttons
They are faceted so the light will occasionally sparkle from them and make them look nicer.
The flat ones have a faceted rim to them and are 2 holes. They are 13mm in diameter.
The round ones are also faceted and half-sphere and have a lug on the back to attach them. They are 10mm in diameter.
They can also be used for other crafts like scrapbooking.
The more you buy the cheaper it will work out per item.
Please look carefully at all the photos to help select your item.