Twinkle buttons are made of metal and have pierced (open) tops that reveal a shiny liner or reflective surface. They come in many shapes and sizes; the liners also come in a variety of colors. You might say that these buttons were the “bling” of their day!
They can be simple or elaborate, and the twinkle portion can be a single tiny element confined to the border or cover the entire surface of the button. What I have pictured, is a beautiful twinkle button, with floral designs on the button itself, and the twinkle part is each petal of a flower. I made this twinkle button into a hair clip, and it really catches the light, and is very shiny through the pierced openings!