Welcome. I noticed no one has responded to your post. Since you are looking for a micro-pave setting try posting under RockyTalky and I''m sure you''ll get some help.
So, I''m way late to the party here, but I wanted to say that Ritani makes settings under 5K. I have one myself (and love it!) and we spend under 5K total for the diamond and the setting (.70 center H SI2 diamond) I hope this helps!