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rose gold and silver rings together The formation and origin of opal

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Opals can be divided into four categories in terms of their body color: white opals, black opals, fire opals and glass opals.

1. White opal

The body color of white opal is milky white, and may have some other colors, such as pink and light yellow, but in general it is still white, changing the color to 3-5 그림 물감.

2. Black opal

The body color of black opal is blue-black, sometimes dark green, 진한 갈색, and dark gray, which change strongly.

3. Fire opal

The body color of fire opal is yellow, red or orange. Some fire opals do not change color. They are called fire opals just like the color-changing varieties.

4. Glass opal

Glass opal is actually white opal with very good transparency. Sometimes it is also classified as a kind of opal, known as “Jade Drop Stone”.

Opal can be divided into opal, opal split stone, and synthetic opal according to its origin and processing method.

Opal split stone is a special treatment method of opal. Opal is often produced in the form of flakes. Many opal flakes are of excellent quality, but they are too brittle, so people invented the spelling method. Usually a piece of transparent crystal is covered on the opal. 한편으로는, it can strengthen the firmness. 반면에, the hardness of the crystal is higher than that of the opal, which improves the durability of the whole gem. Some opals are too thin, and a layer of dark color material is attached to the bottom, sometimes it is black plastic, sometimes it is simply the dark parent rock of the opal. These opal mosaic stones are common in the international market and are accepted by the market, but they must be noted at the time of sale and the price is lower than pure opal gems.

The quality of opal is evaluated in terms of color (body color), color change, clarity and firmness.

1. 색상

Body color is best black or dark, white or light color is the second, orange and orange are the second.

2. Change color

The color change should spread all over the opal, even and complete, without colorless “dead spots”. The best quality opal should show the seven colors of the spectrum, the more colors appear, 더 나은, especially the red and rare purple and purple red. The color change should have strong brightness and transparency, and the appearance should be bright, and the more dynamic the better.

3. 깨끗함

The less impurities mixed in, 더 나은.

4. Robustness

It is better if there are no obvious cracks. If there is, pay attention to the location and extent of the cracks.

 

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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.