The stamp set used was Papertrey Ink's Vintage Picnic. After stamping and coloring, the sides were covered with gold Chartpak tape, and the finding on the back was glued on. The pendant is hanging from a leather cord to which clasp findings have been attached. The photo above makes it look very big but in fact the pendant itself is only about 3/4" square.
Here's a tip: I got the Scrabble tiles directly from the game manufacturer Hasbro's replacement parts division for only $6.50 for 100 tiles including four racks and a tile pouch, by printing up their form and sending it with a check. I received the tiles in less than two weeks and I thought it was a really good price and service. Not paid by these folks by the way, just a satisfied customer.
Thanks for looking, and have a nice day!