 It is possible to speculate on the likelihood of keshi pearls from various cultivations based on supply and demand.Tiny "seed" pearls (<2mm) occur commonly in all types of molluscs used for pearl cultivation, both ocean and freshwater, thus there has never been a need to find a way to cultivate tiny sizes.Japan Akoya pearl production generated large numbers of tiny keshi pearls, the value of which was mostly in the labor-intensive processing, so there is little or no incentive to cultivate extra keshi.