We all know I have a thing for rocks and crystals (see here and here), so when these ideas popped up in my Pinterest feed I did a little happy dance.
Source: Ruffled Blog
Source: 100 Layer Cake
Source: Weekday Carnival
I'm happy I didn't think of this idea for my own wedding (read: $$$), but I think I'm going to try it out for a little dinner gathering soon!