Rubies, known for their captivating red hue, have been treasured gemstones for centuries. Even a person who is not a gem enthusiast might have heard a story about the charm of rubies. Among the various treatments employed to enhance their quality, heat treatment stands out as a widely practiced method. In this article, we will delve into the fascinating world of heat-treated rubies, exploring the process, reasons for treatment, and the characteristics that distinguish them from unheated rubies.
About Natural Color of Rubies
Natural rubies are known for their appealing red color. From pinkish red to pigeon blood red, rubies are found in various shades of red. Out of all these shades of red, pigeon blood red is the most beautiful and expensive.
This is where heat treatment comes into the picture because this treatment is known to enhance the overall appearance of the gemstone. Gem enthusiasts who cannot afford to buy superior-quality rubies can settle for heat-treated rubies.
Understanding Heat Treatment
Heat treatment is a common practice in the gemstone industry, aiming to improve the color and overall appearance of rubies. The process involves subjecting the gemstones to high temperatures, typically ranging from 1,700 to 2,200 degrees Celsius (3,092 to 3,992 degrees Fahrenheit), in a controlled environment. The stones are heated for a specific duration and then gradually cooled to stabilize the changes induced by the heat.
Reasons for Heat Treatment
The primary motivation behind heat-treating rubies is to enhance their color. Heating can eliminate or reduce undesirable hues and modify the stone's internal structure to create a more vibrant and uniform red color. The process triggers a rearrangement of the crystal lattice, which alters the absorption and reflection of light, resulting in improved transparency and brilliance.
1. Color Improvement: The most notable distinction between heat-treated and untreated ruby lies in the color. Heat treatment can intensify the red hue, making it more vivid and appealing. The process often removes purplish or brownish secondary tones, resulting in a pure, vibrant red color.
2. Clarity Enhancement: Heat-treated rubies may exhibit improved clarity because they make inclusions unnoticeable and work to heal fractures. The heat-induced structural changes can help minimize the visibility of these imperfections, enhancing the gemstone's overall visual appeal.
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3. Uniformity and Transparency: Heat treatment can enhance the transparency and uniformity of rubies. By altering the crystal lattice, the treatment improves light transmission through the gemstone, resulting in increased brilliance and sparkle.
4. Durability: Heat-treated rubies retain the same durability and hardness as untreated rubies. The treatment process does not compromise the gemstone's physical properties, ensuring that it remains resistant to scratches and suitable for daily wear.
5. Wide Availability: Heat-treated rubies are more readily available in the market compared to untreated rubies. The treatment allows gemstone manufacturers to enhance the appearance of a larger number of rubies, making them more accessible to gemstone jewelry designers and consumers.
Ethical and Legal Considerations
Heat treatment is a widely accepted practice in the gemstone industry, and properly disclosed heat-treated rubies are considered legitimate gemstones. However, it is crucial for gemstone sellers to provide detailed information about the treatment to consumers. Transparent disclosure ensures that buyers can make informed decisions and understand the value of the gemstone they are purchasing.
Most natural rubies, whether treated or not, are obtained ethically because of a sound legal framework. Still, there is a chance you can come across a gemstone that is not ethically obtained. To avoid such a situation, you should ask for authenticating certificates and verify them.
Conclusion
Heat-treated rubies have become a popular choice for those seeking vibrant red gemstones with enhanced visual appeal. The process of heat treatment, through controlled heating and cooling, allows gemstone companies to optimize the color, clarity, and overall beauty of rubies. While heat-treated rubies may differ from untreated rubies in terms of color and transparency, they retain the same durability and natural beauty.
As with any treated gemstone, it is essential for consumers to receive accurate information about the treatment, ensuring transparency and ethical practices within the gemstone industry. So, what is your pick, an untreated ruby ring with an expensive untreated natural ruby or a ring with sparkling treated ruby? Do not forget to tell us in the comment box.
