Gemstone profile and identification guide
London Blue Topaz
London Blue Topaz is a Blue silicate prized for its distinctive beauty, historic appeal, and use in fine jewellery and collector pieces.
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Overview
London Blue Topaz is a Blue silicate prized for its distinctive beauty, historic appeal, and use in fine jewellery and collector pieces.
Use this profile as a collector reference and educational guide for quick on-page comparison, then validate with the interactive identification system.
Identification
Name: London Blue Topaz
Scientific classification: Silicate
Hardness: 8 Mohs
Transparency: transparent
Lustre: vitreous
Crystal system: Orthorhombic
Primary colour: Blue
Secondary colour: Not specified
Colour family: Blues & Cyans
Physical Properties
Hardness category: hard
Hardness value: 8 Mohs
Chemical composition: Aluminum fluorosilicate (Al2SiO4(F,OH)2)
Crystal system: Orthorhombic
Common locations: Brazil, Pakistan, Russia, Nigeria
Learn more: Gem-A gemstone education resources.
Colour Variations
London Blue Topaz is classified within the blues & cyans palette. Primary colour: blue.
Optical effects: None specified in the current dataset.
Formation
Grows in high-temperature igneous rocks and hydrothermal veins.
Origin
Brazil, Pakistan, Russia, Nigeria
Uses
Best for: Jewellery, displays, and design accents.
Ideal uses: Versatile collections and polished showcases.
Care
Clean with warm soapy water and avoid sudden temperature changes.
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London Blue Topaz FAQ
How can I identify London Blue Topaz?
Compare hardness (8 Mohs), crystal system (Orthorhombic), colour profile, and lustre (vitreous) with your sample. Then cross-check related gemstones listed above.
What colour range does London Blue Topaz appear in?
London Blue Topaz is classified within the blues & cyans palette. Primary colour: blue.
Where is London Blue Topaz commonly used?
Versatile collections and polished showcases.. For maintenance, follow the care guidance in this profile.
Scientific References
Reference data from GIA and Mindat mineral records.