Beyond-beyond Iridescent, intense greens and blues. Sometimes depending on the angle of the light, rainbows, purples and black swirls. 15mm or 5/8" diameter and quite thick for shell; these aren't flimsy buttons and they will hold up well.  Note the color variance between them; each is more gorgeous than the last. They are tiny works of art. Shape, holes and thickness are quite consistent. Backs are textured and un-polished. This is a high end button for your best projects.  

The quantity shown above, "Only --- left",  is the number of PACKS of 8 we have. Not how many individual buttons.

We also sell these individually in another listing.