Hydrothermal synthetic emerald, high quality, with certificate(price/carat)

I. The Principle of Hydrothermal Synthesis of Emerald

The hydrothermal method for synthesizing emerald is a way to promote crystal growth in a high-temperature and high-pressure aqueous solution. The principle is to dissolve substances that are insoluble or poorly soluble under atmospheric conditions using a high-temperature and high-pressure aqueous solution, or to react and generate dissolution products. Convection is generated by controlling the temperature difference in the solution within the autoclave to form a supersaturated state, thereby precipitating and growing crystals.

II. The Specific Process of Hydrothermal Synthesis of Emerald

1. Preparation of raw materials: Put the raw materials of emerald (usually minerals containing emerald components) and some chemical reagents into the autoclave.

2. Application of high temperature and high pressure: Start the autoclave to achieve the required conditions inside to dissolve the raw materials and form a solution.

3. Control of temperature difference: Use the temperature difference to generate a convection effect, making the components in the solution evenly distributed and forming a supersaturated state.

4. Crystal growth: In the supersaturated state, the emerald crystals start to grow in the solution, and the time required depends on the experimental conditions and the crystal growth rate.

5. Cooling and extraction: After the crystal growth is completed, cool the autoclave to room temperature and extract the synthesized emerald crystal.

III. Advantages of Hydrothermal Synthesis of Emerald

1. Excellent color: It can simulate the growth environment of natural emeralds, and the synthesized crystals usually have a brighter color. The depth and tone of the color can be controlled.

2. Fewer inclusions: There are fewer internal inclusions and a high clarity.

3. Fast growth rate: Larger crystals can be grown in a relatively short time.

IV. Disadvantages of Hydrothermal Synthesis of Emerald

1. High cost: High-temperature and high-pressure equipment is required, and the growth process is complex.

2. Difficult to control: The growth conditions are demanding. Precise control of factors such as temperature, pressure, and solution concentration is necessary; otherwise, it may lead to uneven crystal growth or defects.

3. Slightly different physical properties: Compared to natural emeralds, physical properties such as refractive index and density may have subtle differences.

It should be noted that these advantages and disadvantages are not absolute and may vary depending on the synthesis method, equipment, and operator. When identifying hydrothermally synthesized emeralds, multiple factors such as color, inclusions, and physical properties should be comprehensively considered, and professional instruments and equipment should be used for analysis.