Since pearls are organic matter, each one is unique and may differ from the photo. Freshwater pearls are cultured pearls (where man intervenes by grafting to allow the mollusk to secrete nacre and produce a pearl). These pearls are produced only by pearl mussels and are characterized by a thick, high quality nacre, resulting in very round pearls. Freshwater pearls offer a palette of subtle colors in shades of cream, gold, pink, champagne, white... China is currently the world's largest producer of freshwater pearls and these Chinese pearls are known for their magnificent luster and beautiful quality. The first freshwater pearls were cultivated in Lake Biwa in Japan, which is why they are still sometimes called "Biwa pearls".

The length of the threads can vary from 1 to 3cm.