15mm 18mm, 22mm Stone Effect Buttons
Material..Not sure
Size. Given in the drop-down menu.
These are quality buttons.
I would say they are perhaps a mixture of acrylic and ground stone in order to get the effect they have.
They come in 15, 18 and 22mm diameters so suitable for lots of items.
I would say they could be used for costumes, jackets, shirts, handmade knitwear, bags, (as decoration), card making etc.
The more you buy the cheaper it will work out per item.
Please look carefully at all the photos to help select your item.