Jadeite is a gemstone that comes in various grades, with each grade having its own distinct characteristics and significance. In this blog post, we will explore the differences between Jadeite Grade A, B, and C, shedding light on their unique features and factors that influence their value. Understanding these grade variations will provide valuable insights for those interested in jadeite, allowing them to make informed decisions when evaluating and buying this exquisite gemstone.
Jadeite Grade A (Authentic)
Jadeite Grade A is regarded as the highest standard of quality and authenticity for jadeite gemstones. It is considered the ideal form that jadeite should possess, known as Type A. Type A natural jadeite indicates that the gemstone is free from any chemical treatments.
During the polishing process, a thin layer of colourless wax applied to the jadeite. This wax coating is acceptable as long as it does not cause any harm to the crystal structure of the jadeite. The purpose of the wax coating is to enhance the smoothness and shine of the jadeite, similar to how car wax enhances the gloss of a vehicle.
After the meticulous polishing, the jadeite item is submerged in heated liquid wax, allowing it to absorb the wax. Once the wax cools down, the jadeite is carefully buffed to achieve a flawless and lustrous finish. This process showcases the natural beauty of the gemstone while preserving its authenticity.
By meeting these standards, Grade A jadeite guarantees its authenticity, as it is free from chemical treatments. It also exhibits the desired smoothness and shine that collectors and enthusiasts value.
Jadeite Grade B (Bleached)
Jadeite Grade B, also known as Type B jadeite, undergoes a specific treatment process that involves a "bleaching" effect. In this process, the jadeite is soaked in acid to remove impurities or oxidation stains, resulting in a lightening of its color. However, this treatment can also create small holes or tiny craters throughout the gemstone.
Following the acid treatment, the jadeite undergoes a process where it is placed in a vacuum chamber. Inside this chamber, polymer resins are infused into the gemstone, enhancing its smoothness and giving it a shiny appearance. After the completion of this step, the treated jadeite undergoes a final polishing, resulting in a glossy finish that brings out its vibrant colour.
It's important to remember that Type B jadeite can change and degrade over time. The special resin used in the treatment process may become discoloured and oxidised when exposed to heat and sunlight, resulting in a yellowish colour.
While Grade B jadeite offers an enhanced appearance due to the bleaching and resin infusion, it's necessary to understand the potential effects of these treatments on the gemstone's long-term appearance and stability.
Jadeite Grade C (Coloured)
Jadeite Grade C, also known as Type C jadeite, undergoes the same treatments as Type B jadeite but with an additional step that involves applying dyed colouring. During this process, vibrant pigments are added to the polymer resin, resulting in an enhanced or additional effect on the gemstone's colouration.
It is important to note that, similar to Type B jadeite, the colours of Type C jadeite may experience changes and become dull over time. The polymer resin used in the treatment process of Type C jadeite can be susceptible to discolouration and oxidation when exposed to heat and sunlight. This can lead to a loss of vibrancy and a shift towards a duller appearance over the long term.
While Type C jadeite offers an expanded range of colours due to the dyed colouring process, it is crucial to consider the potential effects of these treatments on the gemstone's long-term colour stability. Collectors and enthusiasts should be aware of the possibility of colour fading or dullness over time and take appropriate care to preserve the gemstone's appearance.
Conclusion
In conclusion, when it comes to purchasing jadeite gemstones of different grades, it is important to buy from reputable jewellers or dealers. Reputable sources will provide accurate information about the jadeite grade, treatment processes, and any potential long-term effects on the gemstone's appearance.
For those seeking Grade A jadeite, buying from a reputable jeweller ensures that you are acquiring genuine, untreated jadeite of the highest quality. Reputable jewellers can provide assurance regarding the authenticity and value of the Grade A jadeite they offer.
When considering Grade B or Grade C jadeite, it becomes even more crucial to buy from reputable sources. Reputable jewellers will disclose the treatments involved and any potential changes or deterioration that may occur over time. They can guide you in making an informed decision about the long-term durability and appearance of the jadeite.
By purchasing from reputable jewellers, you can have confidence in the quality, authenticity, and accurate representation of the jadeite gemstone you acquire. This ensures a positive buying experience and allows you to enjoy the beauty and significance of jadeite for years to come.
