London blue
$24.95
Item number:
10
Bundle of London blues
London blue typically refers to London Blue Topaz, a coveted gemstone known for its deep, rich blue hue with subtle steel, ink, or greenish-gray undertones. It is the darkest and most valuable shade of blue topaz, highly prized in the jewelry industry.
Key Characteristics
- Color: A heavily saturated medium-to-dark blue, sometimes featuring a slight teal or steel-like tint.
- Treatments: Natural blue topaz is extremely rare. London blue color is achieved through a meticulous enhancement process of irradiation and thermal heating.
- Durability: It rates an 8 on the Mohs hardness scale, making it suitable for everyday wear like rings and earrings, though it still requires gentle care to avoid scratches and chipping.
- Value: Because of its deep saturation, it commands a higher market price than lighter varieties like Sky Blue or Swiss Blue topaz.