GemGeek
Pearlista
They're all big and beautiful! 

Edison pearls are the brand name of the (original?) developer, Grace Pearls. I guess everyone else is another company or pearls sold off by Grace like the Paspaley pearls that don't deserve the Premier brand name....
Okay...what is the difference between Edisons and other in-body (as opposed to flameball) bead-nuke pearls, besides the name? Is it size, quality etc? Or some other difference?
Seeing so many round bead nukes makes me wonder how long until there are no more solid nacre pearls to be bought....I think the solid nacre pearls we have now will someday be hard to find. With a bead inside, the mussels wouldn't have to be left in the water so long...I just looked at the Grace website and they say the bead nuke shortens the cycle by 2/3.