Host: The Gemmological Society of Japan
Recently small-sized nucleated fleshwater pearls came to circulate in the market.These pearls similar to akoya pearls. So we summarized the differences of characteristics between nucleated freshwater pearls and akoya pearls.
We observed that many of these pearl’s holes had collapsed. For this reason, we thought that nacreous layers of nucleated freshwater pearls became weak by the process. We also investigated these cause in terms of nacreouse layer’s structure.