Blue Topaz, London Blue
Hardness: 8 Mohs
Enhancement Code: Irradiation
London Blue AA: Medium dark greyish blue; eye clean; good brilliance; good cut; good polish
Sky Blue AA: Bright light blue; eye clean; good brilliance; good cut; good polish
Swiss Blue AA: Medium to dark bright blue; eye clean: good brilliance; good cut; good polish
Care: Rated “good” for everyday wear. Avoid direct sunlight and exposure to heat, which may cause colour to fade. Avoid contact with chemicals. To clean, gently scrub with a soft toothbrush and a solution of mild dish soap and warm water.
Major Sources: Brazil
Blue is the colour of communication and self-expression. The clear, voluptuous colour of Blue Topaz certainly speaks for itself. From the pure pastel blue of an Alpine glacier, to the glow of the mid-summer sky, to the aquatic hue of the deepest ocean, refreshing Blue Topaz brings a breath of fresh air to contemporary jewellery designs.
The ancients prized Topaz as a stone of divinity that could dispel enchantments, detect poisons — even render the wearer invisible at will. Today it is claimed as the state gemstone of Texas.
Blue Topaz rivals Aquamarine in colour and charm. Found in greater abundance, it offers superb clarity and luminous colour at a fraction of the cost.