I fell in love with these coasters on my last visit to Anthropologie. I spotted them while in line and only had a few moments to play with them. I'm still kicking myself for not picking out the ones I wanted and bringing them home with me.
You can still buy them online, but they are sold in sets and if you are super anal like me you can't specify exactly how big of a crystal burst you want on each tile;)
Oddly, I'm really attracted to the burnt orange ones, which must be the 70's influence of the runway working its magic on me. Anthropologie, $32