What are the factors that determine the value of black pearls?
When it comes to pearls, the first thing that comes to mind is its sleek, smooth, white image. It is a representative of beauty and purity, and is one of the jewelry that all women have always loved. But are black pearls common? Why are black pearls so expensive? Then let's explain the black pearl to you by Xiaobian.
One of the reasons for the high price of black pearl is that it has higher requirements for itself. Only when it meets five standards at the same time, it is perfect. He reflects its value, color, size, shape, gloss and bead quality. Black pearl value.
1, color
Color is an important indicator of pearl value evaluation. However, due to the different customs, ethnic groups, hobbies, cultural Beijing and market demand, the hobby of color is not the same. Although the popular demand and scarcity of a certain color will greatly affect their price, the weight of the color value will only account for 10%-20% of the determinant of the pearl value.
The color of the pearl consists of three parts: body color, accompanying color, and stun. Body color refers to the overall color of the pearl itself. The accompanying color refers to one or several colors that float on the surface of the pearl. Halo refers to the driftable iridescent color formed on the surface or under the surface of the pearl. It is a comprehensive reflection of various optical manifestations such as refraction and diffraction of light caused by the structure of pearls. The difference between dizziness and color is that the halo is a drifting, sinuous rainbow color that needs to be seen in the correct position; and the companion color is a certain color superimposed on the pearl body color, which appears in the pearl. Top or right side of the light.
2, size
The size of the pearl refers to the size of the unit pearl. Size plays a very important role in the price of pearls. Pearls of the same grade, the larger the diameter, the higher the value. The size of the pearl is generally divided into the following six grades by diameter:
PCT beads: 2.0 mm ≦ diameter ≦ 5.0 mm; beads: 5.0 mm ≦ diameter ≦ 5.5 mm; medium beads: 5.5 mm ≦ diameter ≦ 7.0 mm;
Large beads: 7.0mm ≦ diameter ≦ 7.5mm; extra large beads: 7.5mm ≦ diameter ≦ 8.0mm; super large beads: 8.0mm ≦ diameter
3, shape
Shape refers to the external form of the pearl. Pearls can come in a variety of shapes. Seawater pearls are generally divided into round, round, near-circle, ellipse, flat, and shaped, and there are six categories. Freshwater pearls are divided into round, elliptical, oblate, and shaped, and there are four major categories. As the saying goes, "Yu Run Zhu Yuan", the highest value is the round "beads" (referring to rolling in the disk will not stop). However, if the shaped beads are ingeniously conceived, they can achieve unexpected aesthetic effects and artistic sense, and can greatly enhance their value.
4, luster
Gloss refers to the intensity of the reflected light on the surface of the pearl and the degree of cleaning of the image. It is one of the most important factors determining the quality and value of the pearl. The beauty and elegance of the pearl is largely due to its luster. The strength of pearl luster depends mainly on the nature of the nacre. In general, the more the number of nacre layers, the thicker the thickness, and the higher the order of the nacre (ie aragonite), the stronger the pearl luster. At present, the trade community generally believes that the thickness of the nacre is more than 0.5 mm thick, 0.35-0.5 mm is medium, 0.25-0.35 mm is thin, and less than 0.25 mm is very thin. The thickness of the nacre is at least greater than 0.35 mm, and the pearl can show a good luster.
5, the quality of the bead
Pearl's bead quality includes flaws and finish. The enamel of a pearl refers to an external defect in which the surface of the pearl is not smooth and unattractive. The finish refers to the total extent of the pearls. Like other gems, pearls tend to be flawed, and fewer ticks, the better the quality of the pearls. Common enamels on the surface of pearls include ridges, waist lines, stains, nicks, flaking, cracks, scratches, and the like. Among them, the crack and the peeling of the nacre have the most serious impact on the quality of the pearl. When the cockroach appears in a relatively hidden position, the effect on the quality of the pearl is small.
It is the value of these five standard absolute black pearls, only five are perfect, it is the most perfect. The above is an analysis of the value of black pearls. Pro, do you understand?
Shandong EMF New Material Technology Co., Ltd , https://www.earthingsilver.com