Edison pearls are simply one brand of bead nucleated freshwater pearls from China. Bead nuked pearls started to appear five years ago and can be divided into two main categories, depending on the quality of their nacre: either smooth or rippled. From this you can split the smooth into Edison (a brand from the pioneer of this type of pearl), Ming, (the second brand, not allied to any particular wholesaler) and generic bead nucleated pearls.
(Just to remind, until a few years ago freshwater pearls were usually all nacre, with pearl growth triggered by the insertion of just a sliver of mantle tissue into a host shell. It was only sea water pearls (South Sea, Tahitian, Akoya and a few freshwaters such as coin pearls) which had a bead template nucleus as well as that sliver of mantle tissue)
Edison is the brand name given to a range of large bead nucleated freshwater pearls from one leading Chinese supplier. One strand of these pearls achieved £1/2m at auction. The pearls come from a Hyriopsis hybrid between Hyriopsis cumingi and Hyriopsis schlegeli.
The Ming pearl name tends to be applied to the better quality of generic bead nucleated pearls. It is more of a description of quality than a brand. (Edison is a brand, belonging to one pearl farmer/wholesaler. They tend to be the most expensive and can be the finest quality available in the world)
In general these new bead nuked pearls can be any quality from superb to – like any pearls – terrible quality, with pitted, ringed, thin and lumpy nacre and washed out colour with chalky lustre. That’s probably what you’ll get if you bought from an unknown seller on any auction site. Quality (and, of course, price) runs up to metallic lustred 15mm perfectly round. flawlessly smooth surfaced pearls
Necklace of 12mm to 13mm AAA Edison pearls
The very latest bead nucleated pearls natural deep mauves, lilacs and purple shades
only appeared in 2015
Pair of flawless deep gold round ming pearls -14mm
The pair of pearls in the above photo would pass as a top quality pair of South Seas any day – and are still very expensive, but not as expensive as south sea pearls.