London Blue Topaz is a popular gemstone known for its stunning deep blue color. Many people wonder if this gemstone occurs naturally or if it is treated in some way to achieve its beautiful hue. In this article, we will explore the origins of London Blue Topaz and how it gets its signature color.
What is London Blue Topaz?
London Blue Topaz is a variety of the mineral topaz. It is typically a dark blue color with hints of gray or green.
It is one of the three recognized shades of blue topaz, along with Sky Blue and Swiss Blue. London Blue Topaz is the darkest and most saturated of the three.
Is London Blue Topaz Natural?
Yes, London Blue Topaz occurs naturally. However, it is rare to find top-quality specimens in nature that display the deep blue color that London Blue Topaz is known for. Most natural blue topaz stones are actually very pale in color and are heat-treated to achieve a more desirable shade.
How Is London Blue Topaz Created?
Most London Blue Topaz stones available today are created through a combination of heat treatment and irradiation. Raw, natural topaz crystals are exposed to high levels of radiation to alter their crystal structure. The irradiated stones are then heated at high temperatures to produce the striking deep blue color that characterizes London Blue Topaz.
The Importance Of Irradiation And Heat Treatment
While some people may be wary of irradiated gemstones, it’s important to note that this process does not make the gemstones radioactive or dangerous in any way. In fact, irradiation has been used for decades to create different colors in gemstones.
Heat treatment also plays an important role in creating London Blue Topaz. Without heating, the stones would retain their original pale color or turn brownish-yellow instead of the desired blue. The final color of the gemstone depends on a variety of factors, including the initial color of the raw stone and the duration and temperature of the heat treatment.
Conclusion
In summary, London Blue Topaz is a naturally occurring gemstone that is often treated with irradiation and heat to achieve its striking deep blue color. While some people may prefer natural, untreated stones, there is no denying the beauty of London Blue Topaz. Whether you’re looking for a piece of jewelry to add to your collection or simply appreciate the natural world, this gemstone is sure to impress with its unique hue and exceptional brilliance.