In conclusion, the freshwater cultured pearls produced by mussel Hyriopsis cumingii contain no calcites, and this is obviously different from characteristics of saltwater cultured pearls.
In conclusion, the freshwater cultured pearls produced by mussel Hyriopsis cumingii contain no calcites, and this is obviously different from characteristics of saltwater cultured pearls.
三角，帆蚌淡水养殖珍珠中不存在方解石，这与海水养殖珍珠中存在方解石明显不同。