What is the difference between a nuclear pearl and a non-nuclear pearl?
What is better about seawater pearls (nuclear pearls) and freshwater pearls (nuclear pearls)? The controversy has been around for a long time. The turnip greens have their own love. We will not comment on who is better with nuclear and non-nuclear. We can tell you the difference between them and then look for the pearl that belongs to you.
1. Gloss: The pearly density of seawater pearls is larger than that of freshwater pearls, so pearl pearls are good and mirrors are strong.
2, the thickness of the nacre: conventional non-nuclear freshwater pearl is composed of 100% pearl, so the nacre is thicker than the nucleated seawater pearl layer; international regulations, the pearl of the sea pearl must be 0.3mm before it can be sold.
3. Shape: The non-nuclear freshwater pearl has no foreign matter to support its shape. It is difficult to form the same roundness and size as the nucleated seawater pearl. Therefore, it has the same round shape. The nuclear seawater pearl is generally more refined than the freshwater pearl. Round, while the shape of freshwater pearls is more diverse.
4, size: non-nuclear pearls naturally grow in the mother, so the particle size can not be manually controlled, perhaps 1 mm large or 7 mm large, or due to the natural environment of farming and the growth of the age to produce a larger diameter; The nucleated pearls are almost never smaller than the diameter of their bead cores. The size of freshwater pearls ranges from 1mm to 18mm, and the size of seawater pearls ranges from 6mm to 18mm. The perfect round freshwater pearls larger than 12mm are almost rare, while the round pearls around 12mm are common. Much more.
5, color: freshwater pearls almost all the color of the pearl, but some of the color is extremely rare, such as malachite green is also known as the black pearl, the black freshwater pearl necklace seen on the market is basically produced by dyeing; such as purple pink Natural colors, seawater pearls are not available, but malachite green (black) is the unique color of Tahitian pearls belonging to seawater pearls.
6, trace element content: due to different growth years, freshwater pearls have higher overall amino acid content. In fact, the composition of seawater pearls and freshwater pearls is similar: a variety of analyses have found that there is no fundamental difference between the composition of freshwater pearls and seawater pearls. Freshwater pearls have 13 amino acids higher than seawater pearls, and two are flat. The content of three kinds of amino acids is lower than that of seawater pearls. For example, the chemical composition of freshwater pearl powder and seawater pearl powder was analyzed and compared with the 313 hospital No. 1989, No. 1989, China Pharmaceutical Journal. The analysis showed that freshwater pearls and seawater The chemical composition of pearls is basically the same, and more research proves this.)
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