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rose gold stud earrings Basic quality evaluation of rubies

Diposting di oleh Kingjy

(1) Color. The ruby ​​with the best color is called “Pigeon darah merah”, yaitu, the color is as red as the blood of a pigeon, with a bright red color. Tentu saja, true pigeon blood rubies are very rare. Rubies are the best in category A (“Darah Pigeon”), followed by category B (pigeon blood rose), category C (rose red) again, and category D (light rose red).

(2) Quality. The mass unit of rubies is the same as that of diamonds, which is carat (ct). Rubies of 1 ct are rare, and rubies larger than 5 ct are rare.

(3) Clarity. Because rubies generally contain obvious inclusions, the clarity evaluation standard is low. Umumnya, there is no visible inclusions and the quality is good. If it is visible to the naked eye but not very obvious, and it will not affect the firmness of the gemstone, it is also acceptable.

(4) Transparency. Ruby is not high in clarity, and Gan Qi’s transparency requirements are not high, and for star ruby, translucent or even opaque is better. As long as the clarity is not affected, the higher the transparency, semakin baik.

(5) Cut work. Ruby is very particular about cutting, and its refractive index is lower than that of diamond. Karena itu, if ruby ​​is to produce total internal reflection, the angle of the pavilion must be larger than that of diamond, which means that the pavilion must be deeper than diamond; The starlight effect must be cut into a curved surface. The arc height should be appropriate, too low the star line will blur, and too high will affect the appearance.

In short, the main evaluation of ruby ​​is: whether the color is pure (no unpopular colors or hue, such as the gray tone in ruby), whether the clarity is good (no or few blemishes, inclusions, ribbons, stripes, dll.), and whether the color is uniform , Whether the transparency is high, whether the processing ratio of each part is in compliance with the regulations, whether the polished surface is flat and smooth, whether the style is novel, whether the quality is above 0.3 ct (for ring noodles, use more than 0.3 ct, less than 0.3 ct can only be used for group Inlaid jewellery. Rubies exceeding 5 ct are rare and must be priced separately).

 

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Guangzhou Jingying Fokus pada Kalung Cincin Grosir Kustom Gelang Anting Sterling Silver 925 perhiasan,Sterling Silver Gold berlapis 18K,14K,24K emas kuning,emas putih dan emas mawar.,merek logo atau kata -kata lain dengan ukiran laser sesuai dengan persyaratan pelanggan.

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