Mikimoto ONLY use the top 3% and their pearls are beautiful and blemish free.
Mikimoto are Akoya pearls and have around 5% nacre around a shell bead. Akoya are probabvly the ultimate example of marketing over content. Having said that I agree about the ring pearls I find them completely unattractive. To bve fair Ralph probably uses them to meet QVC's demand for large quantities. I do buy some of Ralphs more unique designs.
For truly beautiful CFW pearls try pearlparadise Jeremy Sheperd truly knows his pearls and I have bought many from him from large (huge) natural baroque strands to exotic metallics and beautiful blue grey baroque akoyas at prices that put Honora to shame. You can also discuss pearls and what you should look for here http://www.pearl-guide.com/forum/index.php