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December Birthstone: Blue Topaz FAQs
What is the difference between London Blue and Swiss Blue Topaz?
The main difference lies in color saturation. Sky Blue is pale and airy; Swiss Blue is vivid and bright, resembling a tropical ocean; and London Blue is a deep, sophisticated navy with subtle grey or green undertones. London Blue is generally considered the most valuable and popular for December birthstone jewelry.
For a complete guide on these stunning shades, visit our Blue Topaz: December Guide.
Is Blue Topaz a "real" gemstone or a lab-grown one?
Blue topaz is a real, natural gemstone. However, almost all blue topaz on the market starts as colorless topaz and is treated with irradiation and heat to reveal its vibrant blue color. This is a permanent, industry-standard process that mimics nature’s way of creating color, making blue topaz jewelry both authentic and exceptionally brilliant at an affordable price.
Can I wear a Blue Topaz ring as an engagement ring?
Yes, with a Mohs hardness of 8, blue topaz is very durable and resistant to scratches, making it an excellent choice for blue topaz engagement rings. However, topaz has a property called "cleavage," meaning it can split if hit hard at a specific angle. We recommend a protective setting, like a halo or bezel, for active daily wear.
Why is Blue Topaz so much cheaper than Aquamarine?
Blue topaz is more abundant in nature and easier to treat for consistent color than aquamarine. While they may look similar, blue topaz offers a higher refractive index, resulting in more "sparkle" or fire. It allows you to own a large, high-clarity December birthstone pendant without the premium price tag associated with rare aquamarine.
Does Blue Topaz lose its color if exposed to water or sun?
Unlike some gemstones, the color of treated blue topaz is incredibly stable and will not fade in sunlight or water. However, chemicals in swimming pools or household cleaners can dull the polish of the stone or damage the metal setting. To keep your blue topaz jewelry radiant, simply clean it with mild soap and warm water periodically.