London Blue Topaz

London Blue Topaz is a rich, deep blue variety of topaz with a slightly grayish or steely undertone, considered the most desirable color of blue topaz.

This saturated blue color doesn't occur naturally and is created through irradiation and heat treatment of colorless topaz - a stable and permanent process. London Blue is deeper and more sophisticated than the lighter Sky Blue or Swiss Blue topaz varieties and resembles fine blue sapphire at a fraction of the cost.

Topaz ranks 8 on the Mohs scale, making it suitable for rings with proper care. London Blue Topaz is December's birthstone and has become popular for both fashion jewelry and engagement rings, offering an affordable option for those who love deep blue gemstones.