Resetting the center will not make the ring smaller so you will likely not wear the ruby setting again. Have you tried pricing the setting separately?
I see a gorgeous pendant!!!!
I spoke with Sako and I think I will put a moonstone or similar iridescent stone in the center if it doesn't sell by the end of the year. I am going to go ahead and reset the diamond at that time too. I normally do not wear necklaces, but it might work as a necklace!