Many gemstones always have some unsatisfactory defects, which affect the value of gemstones. People use modern science and technology to make up for and improve the innate defects of natural gem materials and optimize the treatment of gemstones. So, how to optimize the processing of gems? In this issue, Fujian Baoxie will analyze the three methods of gems optimization for your reference.
Heat treatment
The heat treatment is to heat the gems in a high-temperature furnace, change the content and valence of the pigment ions through different temperature conditions, adjust the structure inside the crystal, and eliminate some defects, thereby changing the color and transparency of the gems. Heat treatment can be used not only as a pre-treatment of dyeing, but also as a post-treatment of radiation, which can increase the stability of color or change and eliminate the influence of radiation.
Surface diffusion treatment
This method is a high temperature optimized treatment method. In the process of optimizing the treatment, not only the gemstone is heated, but also the surface of the gemstone is covered with the relevant coloring matter, the gemstone is heated to near melting, the temperature is kept at a suitable temperature, and the colored element enters the gemstone. Inside, the final color layer is produced. Because the temperature is too high, causing damage to the surface of the gemstone, it is necessary to polish the gemstone slightly. The Chinese Jewelry City specifically reminds that it is not suitable for over-polishing or it will lose its color layer. Surface diffusion treatment is currently only applied to rubies and sapphires.
Filling treatment
This method refers to the special method of injecting some substances into the cracks of the gemstones, thereby improving the color and transparency of the gemstones, making up for the original defects of the gemstones and enhancing the stability of the gemstones. Usually, the materials to be injected are paraffin, colorless plastic, glass, silica gel, colorless plastic, resin glue and vegetable oil, and coloring injection also requires the addition of a coloring agent.
Laminating treatment
The coating treatment method mainly applies coating, coating and foil on the surface of the gemstone. This optimized treatment method is to improve the color state, surface finish and gloss of the gemstone, and to compensate for various defects of the gemstone, such as surface cracks and pits. The film treatment treatment method can be identified by means of a detection tool such as a magnifying glass or with some chemical reagents.
Dyeing treatment
The dyeing optimization process is to use a dye to color the gemstone through a chemical reaction, so that the color of the gemstone reaches or approaches the high quality natural gemstone. When testing dyed gemstones, it is important to note that the cracks and voids of the gemstones tested determine their color, so samples with stains can be detected by absorption spectroscopy, UV fluorescence or cotton balls with acetone.
As technology continues to advance, the method of gemstone optimization will certainly have a greater breakthrough, thus providing consumers with more beautiful gemstones to meet the needs of the beauty.
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