The difference between Edison pearls and akoya pearls: Edison pearls are 10mm, nacre is about 1.5mm, inner core is about 7mm, Akoya pearls are about 8mm, mother-of-pearl is about 0.4mm, and inner core is about 7.2mm The size of conventional freshwater pearls is 1 1.5mm, which is normal.
The pearls that shellfish grow under natural conditions due to accidental factors belong to natural pearls, commonly known as "wild pearls". Pearls grown by artificially putting foreign bodies into shellfish and artificially curing them are called "cultured pearls", also known as natural pearls.
At present, the vast majority of pearls on the market are cultured pearls. According to different aquaculture waters, pearls cultured in seawater are called seawater pearls, and pearls cultured in fresh water are called freshwater pearls.
Development of pearls:
The English name of Pearl comes from the Latin Pernnla, which means "son of the sea". This is the birthday stone in June, the 30th wedding anniversary stone. Pearls with magnificent colors and elegant temperament symbolize health, purity, wealth and happiness, and have been loved by people since ancient times.
China is one of the earliest countries to discover and utilize pearls, and it is a well-deserved ancient pearl country. In the 5,000-year history of Chinese civilization, the description of pearls in words has been recorded for 4,200 years. Ancient descriptions of pearls can be found in The Book of Songs, The Classic of Mountains and Seas and The Book of Changes.
What is particularly commendable is that according to archaeological findings, there is a gold necklace embedded with many pearls in the tomb of Li Jingcheng, the daughter of Dr. Guanglu of Sui Dynasty, which was buried in the Sui Dynasty 1435 years ago. This is the earliest jewelry with pearls found so far. This is enough to prove the important position of pearls in Chinese jewelry culture.