Characteristics of raw natural diamonds (high-definition picture of raw natural diamonds)

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List of contents for this article:

• 1、The easiest identification method for rough diamond
• 2、Unique characteristics of rough diamonds (what is the rough diamond)
• 3、What are the characteristics of rough diamonds? Can you explain it in detail?
• 4、Surface characteristics of rough diamond

The easiest identification method for rough diamond

The simplest identification method for rough diamonds can be preliminarily judged through four basic methods: hardness test, observation of fire color, light recognition in water, and double shadows with magnifying glass. It can be operated without professional instruments. However, it should be noted that these methods are only auxiliary and ultimately require confirmation from a professional institution. Principle of hardness testing method: Diamond is the hardest of natural substances, with a Mohs hardness of 10. It can paddle any other gemstone, but other gemstones cannot scratch diamonds.

The simplest identification method for rough diamond can be used for preliminary identification through three steps: naked eye observation, hardness test, and optical characteristic judgment, and can be operated without professional equipment.

Test the oleophilic and hydrophobic properties: Use an oily pen to draw lines on the surface of the rough stone. If the lines can be continuous, it means that it is oleophilic; if a drop of water is dropped on the surface, the water drop can remain spherical for a long time and not disperse, which is in line with the hydrophobic properties of the diamond.

Another way to identify rough diamonds is through a breath test. Real diamonds have excellent thermal conductivity. When you bring the diamond close to your mouth and breathe, the heat will quickly dissipate. This method is simple and straightforward, and you only need to observe carefully. Photometry is also an effective means of identifying diamonds. Real diamonds have single refractive properties and will show dazzling light when illuminated by light.

Unique characteristics of rough diamonds (what is the rough diamond)

1. The original stone of a diamond is diamond. Diamond, commonly known as "diamond diamond", is a mineral composed of carbon and is an allotrope of carbon. The unique characteristics of rough diamonds include: appearance characteristics: crystal form: rough diamonds commonly have cubes, octahedrons, rhombic dodecahedron and other forms, and there may be triangular pits and growth hills on the surface. Among them, octahedral shapes are particularly common and are a basic characteristic of rough diamonds.

2. The raw stone of diamonds is called diamonds. Diamonds are rich in colors, ranging from colorless to black. Taking colorless diamonds as an example, some diamonds are transparent, while others are translucent or opaque. In most diamonds, there will be a slight yellow color, mainly because diamonds contain certain impurities. In addition, diamond has a high refractive index and strong dispersion properties. It will emit blue-green fluorescence under X-ray irradiation.

3. Rough diamond, uncut diamond, is called "diamond diamonds". Diamond has extremely high hardness, with a Mohs hardness of 10, a new Mohs hardness of 15, and a microhardness of 10000kg/mm, which is 1000 times higher than quartz and 150 times higher than corundum. The hardness of diamond is directional. The hardness of octahedral crystal faces is greater than that of rhomboid dodecahedron crystal faces, and the hardness of rhomboid dodecahedron crystal faces is greater than that of hexahedron crystal faces.

4. Diamond is the original stone of diamonds. The Mohs hardness of the diamond surface is 10, and the microhardness is 1000 times higher than that of quartz. It has extremely high anti-wear ability; the diamond surface has standard diamond luster. The diamond surface has nonmagnetic, poor electrical conductivity (resistivity: 5×104Ω.cm) and triboelectric properties; the diamond surface is oleophilic and hydrophobic, and has a strong affinity for grease and dirt, and oil stains are easily absorbed by diamond.

5. The surface characteristics of rough diamond mainly include the following points: Rich color: The rough diamond, that is, diamond, has a wide range of colors, from colorless to black. Among colorless diamonds, some are transparent, some are translucent or opaque. Most diamonds will have a slight yellow color, mainly because they contain certain impurities. Under X-ray irradiation, diamond will emit blue-green fluorescence.

6. Basic shape of rough diamond Common crystal shapes of rough diamond include cube (hexahedron), octahedron and rhombic dodecahedron. These shapes are determined by the crystal structure of the diamond. In fact, many of the rough diamonds found have irregular shapes. This is because during the natural formation process, diamonds have undergone various geological processes, causing their shapes to change.

What are the characteristics of rough diamonds? Can you explain it in detail?

Raw diamonds have the following characteristics: Monopolitical properties: Diamonds have monorefractive properties, which is one of their essential characteristics. Unlike other natural or artificial gemstones, which are mostly birefringent, diamonds do not show double shadows or overlapping images under light. When observed under a 10x magnifying glass, when viewed from a slightly oblique angle from the front, the edges and corners of the diamond are clear and no overlapping images will appear. Adsorption: Diamonds have a certain affinity for oil and dirt, and oil stains are easily absorbed by diamonds.

The surface characteristics of rough diamonds mainly include the following points: Various forms: Common crystal forms of rough diamonds include cubes, octahedrons, rhombic dodecahedron, etc., and sometimes they also appear in fragments, which can take on other irregular forms. Among them, the octahedral rough diamond consists of eight triangular crystal faces, and triangular erosion pits are often parallel to the three sides of the triangle on the octahedron.

Appearance Characteristics Rough diamonds with leather shells often show irregular shapes, and the surface is covered with a layer of leather shells of varying thickness and color. The color of these skins is usually black, gray or brown, with occasional white or yellow spots. The formation process of these skins is complex because the rough diamond is exposed to high temperature, high pressure and chemical substances in the natural environment, resulting in the formation of oxide films or mineral inclusions on the surface.

The unique characteristics of rough diamonds include: appearance characteristics: crystal form: rough diamonds commonly have cubes, octahedrons, rhombic dodecahedron and other forms, and there may be triangular pits and growth hills on the surface. Among them, octahedral shapes are particularly common and are a basic characteristic of rough diamonds.

Surface characteristics of rough diamond

The surface characteristics of rough diamonds with skins are obvious and usually show a rough sugar-like structure. The diamond crystal in the shell has many tiny holes, which contain less impurities, making the color of the shell appear golden or green-yellow. The biggest feature of diamonds with shells is that the shells often contain relatively high-quality diamonds. The color of artificial diamonds is usually light yellow, light brown, light yellow green or brown, while colorless artificial diamonds are rare.

The surface characteristics of rough diamonds mainly include the following points: Various forms: Common crystal forms of rough diamonds include cubes, octahedrons, rhombic dodecahedron, etc., and sometimes they also appear in fragments, which can take on other irregular forms. Among them, the octahedral rough diamond consists of eight triangular crystal faces, and triangular erosion pits are often parallel to the three sides of the triangle on the octahedron.

First of all, the surface of rough black diamonds usually presents a rough and uneven state. This is caused by millions of years of natural processes, including wear and erosion. In addition, impurities and dust may also adhere to the surface, which further increases the roughness of the surface. Secondly, the surface of rough black diamonds is often covered with a thick and loose skin. This skin is the result of long-term weathering and oxidation.

Appearance Characteristics Rough diamonds with leather shells often show irregular shapes, and the surface is covered with a layer of leather shells of varying thickness and color. The color of these skins is usually black, gray or brown, with occasional white or yellow spots. The formation process of these skins is complex because the rough diamond is exposed to high temperature, high pressure and chemical substances in the natural environment, resulting in the formation of oxide films or mineral inclusions on the surface.

Test the oleophilic and hydrophobic properties: Use an oily pen to draw lines on the surface of the rough stone. If the lines can be continuous, it means that it is oleophilic; if a drop of water is dropped on the surface, the water drop can remain spherical for a long time and not disperse, which is in line with the hydrophobic properties of the diamond.