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London Blue Topaz is a variety of topaz gemstone that displays a deep, saturated blue color. It is typically transparent to translucent and has a hardness of 8 on the Mohs scale. London blue topaz is one of the most popular blue gemstones used in jewelry today, prized for its rich color and excellent clarity.

The reason why it is called London Blue Topaz is that "London Blue" refers to the specific shade of deep blue that resembles the color of London's overcast skies or the deep blue-gray of the Thames River. This naming convention helps distinguish it from other blue topaz varieties and was adopted by the jewelry industry to market this particular color saturation.

London Blue Topaz exhibits a deep, rich blue color that's darker and more saturated than other blue topaz varieties. The color ranges from a deep steel blue to a darker blue with slight gray undertones. It's the darkest of the commercially available blue topaz colors.

London Blue Topaz is created through an enhancement process that involves irradiation and heat treatment of natural colorless or pale topaz. The rough topaz is first irradiated using either electron beam or neutron irradiation, then heated to stabilize the color. This treatment is permanent and widely accepted in the jewelry industry.

While the base topaz mineral is natural, the distinctive London Blue color is achieved through treatment. Natural blue topaz in this deep color is extremely rare and would be prohibitively expensive. The treated London Blue Topaz maintains all the physical properties of natural topaz while offering the desired color at an accessible price point.

The primary difference between London Blue Topaz and Swiss Blue Topaz lies in color intensity. London Blue Topaz is the darkest blue variety with deep, saturated tones and slight gray undertones. Swiss Blue Topaz is lighter, displaying a bright, vivid blue similar to an electric or sky blue. Swiss Blue is more vibrant and lighter, while London Blue is more sophisticated and deeper in tone.

As for the price, London blue topaz tends to be slightly more expensive due to the additional treatment required to achieve its darker color.

Blue topaz is one of the official birthstones for December, along with turquoise and tanzanite. It's also associated with the zodiac signs Capricorn and Aquarius. People born in December often choose London blue topaz birthstone jewelry to celebrate their birth month, making it a popular choice for birthday gifts and personal jewelry collections.

London Blue Topaz is believed to promote calm, clarity, and emotional balance. In crystal healing traditions, London blue topaz is associated with clear communication, wisdom, and peaceful energy. It's thought to help with stress relief and enhance mental clarity, making it popular for both its beauty and symbolic meaning.

London Blue Topaz can make a beautiful engagement ring choice, especially for couples seeking something unique and budget-friendly. The rich blue color of London blue topaz engagement ring offers a sophisticated alternative to traditional stones.

London Blue Topaz has good durability for daily wear with a hardness of 8 on the Mohs scale, but it does have perfect cleavage in one direction, making it somewhat prone to chipping if struck along this plane. Thus, it requires more care than diamonds or sapphires.

At LUO Jewelry, London Blue Topaz rings typically range from $50 to $500 depending on the stone size, cut quality, and setting material. Larger, well-cut stones in precious metal settings command higher prices.

Compared to aquamarine rings, London Blue Topaz is more cost-effective. Quality aquamarine gemstones typically cost $50-500 per carat, while London Blue Topaz ranges from $10-50 per carat. Aquamarine gem is naturally occurring in its blue color and is rarer, contributing to its higher value in the gemstone market.

As for sapphire rings, quality sapphire gemstones can cost hundreds to thousands per carat, which is generally more expensive than London Blue Topaz.

The affordability compared to other blue gemstones makes London Blue Topaz ring an attractive option for those wanting a substantial blue stone without the premium price.

London Blue Topaz ring works well in various cuts, but oval, cushion, and emerald cuts are particularly popular as they showcase the stone's color and clarity effectively. Round brilliant cuts maximize sparkle, while step cuts like emerald or Asscher cuts emphasize the London blue topaz stone's transparency and color depth.

There's no strict rule for wearing London Blue Topaz rings. They're commonly worn on the left ring finger for engagement or fashion purposes, but can be worn on any finger based on personal preference. In some traditions, blue stones are worn on the index finger for wisdom or the middle finger for balance.

Clean London Blue Topaz engagement rings with warm soapy water and a soft brush, such as a toothbrush. Rinse thoroughly and dry with a soft cloth. Professional cleaning once or twice a year is recommended for optimal maintenance.

FYI, London blue topaz ring can get wet without damage. Water exposure during normal wear, washing hands, or rain won't harm the stone. However, avoid prolonged exposure to chlorinated water, hot tubs, or harsh chemicals, which could potentially affect the setting or any accompanying metals.