Heat treatment is a common practice in the gemstone industry, and sapphires are no exception. Heat treated sapphires have soared in popularity over the years due to the enhanced color and clarity they exhibit after the process. While some may argue that heat treatment tarnishes the authenticity of the gemstone, heat treated sapphires have their own unique qualities that make them a sought-after choice for jewelry.

Heat treatment involves heating a sapphire in a controlled environment up to 1800 degrees Celsius. During this process, the sapphire’s impurities are dissolved, and its color becomes more vibrant. The heat also improves the overall clarity of the stone by allowing it to heal fine fractures and impurities.

However, not all sapphires are suitable for heat treatment. A sapphire with too many internal fractures, inclusions, or significant internal stress can easily shatter or crack during the process. Therefore, only good quality sapphires that are already relatively flawless are selected for heat treatment.

Heat treated sapphires come in various colors, including blue, yellow, orange, and pink. Blue sapphires are particularly popular, and the heat treatment process can turn a pale blue or colorless sapphire into a rich, vibrant shade of blue. Yellow, orange, and pink sapphires also benefit from the heat treatment process, resulting in an even and vivid color throughout the gemstone.

Despite the increased popularity of heat treated sapphires, it is important to note that heat treatment can cause some sapphires to lose value, particularly if the treatment is poorly done. Some sapphires may also have their color enhanced through diffusion treatment, which involves adding foreign elements to the sapphire’s surface. This practice is considered less desirable as it can fade over time or when exposed to high temperatures, and is therefore typically avoided by reputable gemstone dealers.

Overall, heat treated sapphires are a beautiful and valuable addition to any jewelry collection. The intensified color and clarity they gain through the heating process are often well-worth the investment, as long as the jeweler can guarantee that only good quality sapphires were used and that the heat treatment was done properly. So, the next time you are searching for a stunning and vibrant gemstone, consider a heat treated sapphire – your eyes will thank you!