Nanyang pearl, which enjoys the reputation after pearl, is native to Australia, the Philippines and the northern ocean of Indonesia. It is a heavyweight pearl with a unique volume, and its diameter is generally between 10 and 20 mm It is extremely precious and valuable. There are pure pink, charming silver and noble gold in color, and many people with high taste will love her.
2. The unfathomable mystery and temptation of Tahiti pearls.
She comes from atolls and coral islands in the South Pacific. Tahiti pearls not only contain the mystery of the deep sea, but also have the magical light of a faint rainbow. Most Tahiti pearls are in the shape of water drops, and their lines are more unique than ordinary circles, ranging in diameter from 10 mm to15 mm. The colors are generally pure black, dark gray and silver, and the most unique color is the dazzling peacock, which is precious.
3. The classic works of Japanese pearl cultivation are touching and shiny.
Japanese pearl culture has always been a classic variety of pearl culture, mainly round or oval, with diameters ranging from 2 mm to 10 mm, which originated in southwestern Japan and China. Paired with pink, cream and silver blue, it is very eye-catching for any lady.
4. The treasure of Xiapu Lake
Xiazhu, which grows in the northern lake area of East JD.COM, is a model of a new generation of pearls. The breeding process needs the close cooperation between human beings and nature, because new varieties of freshwater oysters from Japan and China are adopted, and then round or flat cores are artificially cultivated, so that unique rose-pink or deep-pink pearls can be bred, which are smooth and beautiful, and are deeply loved by everyone.
Pearl pickers were surprised to find Keshi pearls from nature in the process of collecting Japanese cultured pearls, Nanyang pearls and Tahiti pearls. When tiny grains of sand or other foreign matter enter the oyster with the impact of water, a seedless and completely natural pearl is born, and its irregular shape just reflects the mystery of the creator. The color ranges from silver gray to deep charcoal, which is natural and precious.
5. The shapes and colors of freshwater pearls in China are ever-changing.
First of all, look at the luster.
The so-called "bling", luster is the soul of pearls. Pearls that are dull and shimmering lack aura. Look at the light, put the pearl flat on a white soft cloth, and you can see the warm luster of the pearl overflowing; Looking at the light, a good pearl can see colorful iridescence, rich in layers, metallic in spherical surface, and even reflect people's pupils. Especially bright pearls can be classified as Grade A, followed by Grade B. ..
Gloss grade quality requirements
The extremely strong A-reflected light is particularly bright, sharp and uniform, with a mirror-like surface and clear image.
Strong B reflected light is bright, sharp and uniform, and the image is very clear.
C reflected light is bright, and objects can be seen on the surface.
Weak D reflects light weakly, and the surface can illuminate the object, but the image is blurred.
Second, look at roundness.
"You get what you pay for" and "Pearls are round and smooth". The rounder the pearls, the more beautiful they are, which is in line with the aesthetic habits of China people. Large round pearls show the beauty of the full moon. Glossy, creating a hazy artistic beauty. The percentage of the difference between the longest diameter and the shortest diameter of a pearl is ≤ 1% as the standard of perfect circle, the ratio of the difference between the diameters of pearls is ≤5% as the standard of circle, and the range from 5% to 10% is a near circle. But many times, you can see the circle with your own eyes.
Shape rule
Quality requirements (diameter difference percentage%)
Perfect circle A 1≤ 1
Circle A2 ≤5
Closed circle A3 ≤ 10
Ellipse b > 10 can be a drop shape or a pear shape.
Flat C has symmetry, and one or both sides are almost flat.
Irregular D-shape is extremely irregular, usually with uneven surface and no obvious symmetry, which may be the similarity of object shapes.
Third, look at the flaw
The less acne, spots, scars, pits and spots on the surface, the better. Generally speaking, it is an acceptable standard not to see defects at a distance of 0.5 meters. The standard of Grade A is 100%. The surface is smooth, and no defects can be seen by naked eyes. Of course, it is difficult to see the flaw with a magnifying glass. One in a million.
Smoothness of marine cultured pearls
Smoothness quality requirements
With naked eyes, the surface is smooth and delicate, and it is extremely difficult to observe surface defects.
There are few flaws on the surface of Weixian B, which is needle-shaped and difficult to observe with naked eyes.
Xiao Xia C has tiny flaws, which can be easily observed by naked eyes.
Defect D has obvious defects, accounting for less than a quarter of the surface area.
The heavy defect e is obvious, which seriously occupies more than a quarter of the surface area.
Fourth, look at the size.
As the saying goes, "seven pearls make eight treasures." Generally, pearls below 6 mm do not belong to the category of jewelry-grade pearls, and 7-9 mm pearls are generally loved by consumers. 10 mm pearls are rare, and only Nanyang pearls and black pearls are found above11mm. The higher the quantity, the rarer it is, and the price tends to increase exponentially. This standard is not difficult to see.
1, the growth time of a pearl:
Seedling raising: about 2.5-3 years-Pinctada is mature.
Growth: about 2-3 years-pearls grow, about 5 mm -7 mm.
Among them, nacre is secreted 3-5 times a day, and the thickness covered by each secretion is only 0.3μm, and the thickness of nacre cultured for one year is only about 0.3 mm It takes about 3 years to grow to the thickness of 1mm, and then it can grow into gem-grade pearls. In other words, after three years of cultivation, there is a thousand layers of nacre.
2. Of all cultured seawater pearls, only 10%- 15% can be used as jewelry, the other 30% can be used as craft jewelry, and the remaining 50% can only be used as cosmetics and medicines.
Among the 3.65,438+0,000 pearls (newly picked unclassified pearls are called pearls), the ones that were finally selected to make pearl necklaces were: first-class products, about 2 pearls; Second-class goods, about 8 pieces; Third-class products, 15 or so.
4. About 22 pearl necklaces can be strung per kilogram of pearls; The standard length of each necklace is about 4 1cm.
5. Among 1000 pearls, perfect pearls with a diameter of more than 7mm, delicate round shape, gorgeous luster and flawless softness, or AAA pearls are rare, and sometimes even less than10; The inferior, that is, AAB, will not exceed 30-50.
Fifth, look at the color.
This depends on personal preferences, skin color, clothing, occasions and so on. Generally, white is the most popular, pure and elegant, black is mysterious and noble, pink is pure and romantic, and gold is luxurious and elegant.
Sixth, look at the collocation.
Whether it is strung into a pearl necklace or inlaid with precious stones such as gold, silver and diamonds, it emphasizes the harmonious beauty of color, shape and artistic conception. Good designers will show their emotions and culture through products, while experienced and well-trained pearl picking technicians will select and combine pearls well. These are details that are difficult for laymen to notice. As a pearl master, as long as he has a certain aesthetic vision and cultural accomplishment, he can see the advantages and disadvantages of collocation with pleasing to the eye as the standard.