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wholesale necklaces fashion Visual identification of diamond rough

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The naked eye identification of rough diamonds should start from the following aspects.

(1) Observe the gloss

Since diamonds have a typical diamond luster, which is an important feature that distinguishes other colorless and transparent minerals (or materials), diamonds can be distinguished from other imitations by using their luster characteristics.

When observing the gloss of diamonds, you should also pay attention. Because some diamond rough surfaces have very developed crystal surface patterns, which affect the observation of gloss, you should try to observe the gloss from the smooth crystal surface to avoid illusion.

(2) Observe the appearance and surface characteristics of the diamond

In rough diamonds, well-developed crystals occupies a considerable number. Observing the crystal shape can also help us identify diamonds. The most common crystal forms of diamond are octahedron, rhombohedral dodecahedron and the combination of the two. There are few minerals that can appear in these crystal forms in colorless and transparent minerals. Even if they have similar shapes, such as colorless spinel, they can be distinguished from each other because of their other properties.

In addition to observing the crystal morphology of the rough, another feature is the crystal face pattern. Different crystal faces of diamond often have characteristic growth patterns (crystal face patterns). Masalan, octahedral crystal faces often have triangular growth patterns, and cube crystal faces often have quadrilateral growth patterns. This kernel is the identifying characteristic of diamonds.

(3) Estimate the density of diamonds

In all natural minerals or artificial materials similar in appearance to diamonds, except for topaz (topaz), the density values ​​of other gemstones are different from those of diamonds. It can be used to distinguish between diamonds and diamonds. Imitations. It should be noted that this method can only be used under the premise that the sample size is almost the same, otherwise it will cause errors. This method is most suitable for distinguishing diamonds of the same size from synthetic cubic zirconia. Since the density of diamonds is 3.52g/legislation millimeter, the density of synthetic cubic zirconia is about 5.95g/legislation mm, which is almost double that of diamonds. , The feel of the hand is obviously different and it is easy to distinguish.

 

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