Freshwater Pearl
Freshwater pearls are created by freshwater mussels in lakes, rivers and ponds. Today, most freshwater pearls on the market come from rivers and lakes in China, although USA and Japan have a small fraction of the market. A freshwater mussel produce up to 50 pearls at a time (compared to the two to five pearls that saltwater oysters can contain).
All freshwater pearls in the market you can see have been cultured, meaning they were grown in pearl farms using science and technology rather than in nature by accident. The current scientific cultivation technique involves trained technicians implanting stimulants in the mussels to stimulate pearl formation. Unlike the nuclei commonly used in Akoya and other saltwater pearl cultures, the nuclei of freshwater pearls are usually tissue from donated mussels.
The fresh water pearls cultured by the above cultivation techniques do not contain nacreous nuclei, but are entirely composed of nacreous layers. The advantage of a thick layer of nacre is that pearls are more durable and beautiful.
Colors and Overtones
The main colors of freshwater pearls include white, cream and gray, as well as pastel hues such as canary yellow, lavender, pink and orange. High quality freshwater pearls have pink, green, and blue accents, while low quality gemstone pearls do not have any desirable accents. White, cream, mauve and black are the most popular colors for freshwater pearls. However, black freshwater pearls are artificially dyed. Only Tahitian pearls are naturally charcoal gray to black.

Shapes
Although the shape of pearls is typically spherical, only 5% of pearls are perfectly round. The rest of the pearls are nearly round, button-shaped, semi-baroque and baroque. In the past, only round pearls were considered worthy of inclusion in jewelry. But with the development of art of The Times, more and more people have noticed the unique beauty of irregular shaped pearls.

Sizes
The size of a freshwater pearl is determined by the growing season of the pearl. Freshwater pearls generally range in size from 2.0 mm to 15.0 mm, with more than 15.0 mm very rare.

Luster
Luster is an crucial consideration when buying pearls. The luster of a pearl is proportional to its value. In general, Akoya and South Sea pearls (saltwater pearls) have a better luster than freshwater pearls. But there are exceptions, and it depends on each pearl.
Value
Freshwater pearls are the most affordable and most abundant pearl variety on the market. While they look similar to Akoya pearls, freshwater pearls can be up to 80% less expensive than an Akoya.
Differences Among Freshwater Pearl vs Akoya Pearl
- | Freshwater Pearl | Akoya Pearl |
---|---|---|
Cultivate Time | 3-5 years | 10-18 months |
Size | 1-15mm | 3-10mm |
Shape | Round/Near Round/Oval/Button/Drop | Round/Near Round/Oval/Baroque |
Nucleus | No | Yes |
Body Color | White/Cream/Pink/Lavender, etc. | White/Silver White/Sliver Grey/Light Gold |
Orient (Baroque Pearl) | Pink, Blue-Green, etc. | |
Luster | Excellent/VeryGood/Good/Fair | Aurora/Excellent/VeryGood/Good/Fair |
Surface Quality | Very soft and no bump | Very sofy, a few with slightly bump |
Narce Quality | Entirely composed of nacre | 0.3-0.6mm |