It's Fricken Bats! Bat pasties on night sky grey backround - Size M
Designed and Handmade by Winter Greene in Australia
Glass and acrylic stones on smooth pleather base

Covers 6cm / 2.25in diameter areola
(See 20c photo for scale/size reference - please note the AU 20c is a little wider than a US quarter)
 
Please Note - pasties do not come with adhesive!
But this means you can wear them over and over again, unlike cheaper pairs ;)
Everyone's preferences on body adhesives are different - I reccommend Walker Tape or Kryolan spirit gum for the best stick.