Glistening, iridescent natural off-white/pearly tan Mother of Pearl (MOP) shell button is 5/8" x 1/2", with two 1.75mm holes. Natural variance per the photos; some towards pale rainbow colors and some with pretty, slightly rustic, from-the-sea inclusions. Backs are mottled brown. They are very thin but seem to be strong. 

5/8" the long dimension, 1/2" or slightly less the short dimension. 

Pack of ONE HUNDRED (plus a few more for good measure) for $12.00

Where you see "Only ___ Left", that's how many packs of 100 we have, not how many individual buttons.    

If you need fewer, see # KB918 for packs of 12 this size.