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rose gold necklace chain men’s Evaluation of the basic quality of pearls

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The quality evaluation method of pearls can be said to be very systematic and scientific, just like the 4C grading of diamonds. The international evaluation of pearl quality mainly includes the following aspects: 색상, luster, 투명도, 조직, 모양, 크기, 등. In the case of cultured beads, there is also the problem of the thickness of the bead layer.

1. 색상

The colors of pearls mainly include body color and accompanying color.

The best body colors are pure white and black. The other colors are mainly milky white, 분홍색, 금, dark green, dark blue, dark gray and purple. Other colors are inferior.

White pearls are best with pink color, black pearls are best with peacock green, peacock blue and peacock purple are also very good, if there are several accompanying colors at the same time, it is even more rare.

2. luster

A good quality pearl should have a high-quality luster.

3. 투명도

Most high-quality pearls are translucent, but with the loss of moisture, the transparency will become worse, and they will look deep and dense.

4. 조직

There are often some small pits, 흠집, wrinkles, 등. on the surface of a pearl. These pits will affect its beauty. 그러므로, a pearl without flaws is of course the best.

5. 모양

An ideal pearl should be round, but apart from nucleated cultured pearls, it is difficult to get round pearls. The common shapes are oval, drop shape, button shape, as long as the shape is beautiful and symmetrical, it is also very good.

6. 크기

The size of the pearl should be divided into two aspects: quality and size.

Pearls have a special quality unit-grains (also called “pearl centimeters”). 1 pearl grain = o. 05 g, it can be seen that the gap between each grain is very small. When evaluating the value of pearls, first give a quality grade according to the first five points, and then consider its quality. There is a standard of “seven-point bead and eight-point treasure” in the folk, 그게, a pearl diameter of 9 mm is already very good, the heavier the better.

7. Artificial processing

Pearls are generally processed for jewelry. Punching and drilling are the most common, which is also very particular. If the hole is not in the center of the pearl, the pearl will deflect to one side after passing through the rope. It is almost impossible to make another hole, so the quality of the hole will directly affect the value of the pearl.

 

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OEM/ODM 보석 제조업체 디자인 사용자 정의 보석

시작합시다 : mo@kingjy.com

 

광저우 징징 맞춤형 도매 반지 목걸이에 중점 925 보석류,스털링 실버 골드는 18K로 도금되었습니다,14케이,24K 옐로우 골드,화이트 골드와 로즈 골드.,고객의 요구 사항에 따라 레이저 조각으로 로고 브랜드 또는 기타 단어.

월별 생산 능력은 최대입니다 50,000 조각 팔찌 목걸이 귀걸이 링 보석.,보석 체인점,콘센트 상점,보석 도매기,트레이더 및 보석 브랜드 회사,Professional은 고품질의 맞춤형 보석 및 대량 생산을 제공합니다. 925 스털링 실버 보석 서비스.