Thanks for the compliment, critter!
Supplies of Blue Diamond come and go. There are only two suppliers I know of in the U.S.:
http://toptropicals.com/catalo......
http://www.anniesannuals.com/p...... diamond
Annie's Annuals and Perennials has great plants, often quite unusual ones. But the shipping charges are stratospheric. The plants are well-packaged and of excellent quality, but I only order if I see an "absolutely gotta-have."
If you're able to snag a plant sometime in the future, you'll need to bring it indoors into air conditioning during the hottest weeks of summer. It's native habitat is located in mountainous areas.