Mücevher haberleri

rose gold plated necklace Evaluation of Ruby and Sapphire

’' te gönderildi Kingjy tarafından

1. colour

The colors of gems have differences in color hue, saturation, and color brightness, as well as differences in the uniformity of color distribution and the degree of multicolor.

The pros and cons of ruby ​​color hue are: pure red, orange red, dark red, pembe (purple) kırmızı, with pure spectral red as the top grade; the pros and cons of sapphire color hue are: pure blue, purple blue, cream blue, ink blue, Green and blue, with pure spectral blue as the top grade. With the continuous addition of variegated colors such as brown, sarı, and gray, the color quality will be significantly reduced.

High-quality rubies should be pure red, dense and bright in color, uniform in tone, no obvious color bands, and no pleochroism when viewed on a vertical table. Örneğin, . “cornflower” sapphire produced in the Kashmir region has a hazy, purplish hue and a heavy blue, giving a velvety feel. It is the best sapphire.

Aslında, color evaluation is also a comprehensive reflection of clarity and cut quality. The color quality of red and sapphire is not only related to the reflection and transmission of the surface, but also to its internal reflection. Internal reflection can make gems produce a sense of sparkle, increase the brightness of the gems, and increase the concentration and vividness of the gems.

2. transparency

Faceted gems and star gems have different evaluation criteria. Except for star gems, the degree of transparency of gemstones is a very important factor in addition to color. The transparent ones are top-grade and their value is also high.

3. Cleaness

Cleanliness is especially important for faceted gems, and serious inclusions may lose their gem value. The inclusions of high-quality red and sapphire should be relatively small and inconspicuous, without obvious cracks, and do not affect the transparency of the gem. Faceted gems exhibit a certain internal reflection effect.

4. Cut and quality

High-quality red and sapphire should be cut in a suitable proportion, with good symmetry, and a smooth surface. The higher the quality of red and sapphire of the same quality, the higher the value.

Transparent gems are often cut into faceted styles, while extremely dark and opaque star gems are often cut into plain styles. For starlight gems, it is better to have clear star lines and the intersection of starlight as close to the center of the gem as possible.

 

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OEM/ODM Takı Üreticisi Kendi Mücevherlerinizi Özel Tasarlayın

Başlayalım : mo@kingjy.com

 

Guangzhou Jinging Özel Toptan Halka Kolyelere Odaklanma Bezelyeler Küpe Sterlling Gümüş 925 takı,18k ile kaplanmış gümüş altın,14K,24K sarı altın,Beyaz Altın ve Gül Altın. Gümüş mücevherleri özel olarak kullanabilir Çeşitli Tasarım,lazer gravürünün logo markası veya başka kelimeler müşterinin gereksinimine göre.

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