Thanks for the compliments. I was lucky enough to get the rocks from a SFBAAPS member that found them at a landscaping place. I paid around $1.50 a pound. Unfortunately he's out of the rock. I agree, Staurogyne is one of my top 3 favorite plants (the other two being belem hairgrass and mini pellia).
They were bought off a member in Sacramento that had a bunch of it, but he's out of it now unfortunately. Apparently a local stone yard was carrying it but stopped b/c it was too expensive and not popular enough for landscaping.