Topaz – Overview
Intro
Topaz is a versatile gemstone category available in multiple colours, from icy blue to imperial orange and pink tones.
Overview
This starter entry positions topaz as a broad educational category where colour origin, cut, and cleavage should all be covered clearly.
About
This starter entry positions topaz as a broad educational category where colour origin, cut, and cleavage should all be covered clearly. Topaz is presented here as a structured gemstone record ready for linked buyer guides, research posts, and media galleries.
Key Properties
| Mineral / material | Topaz |
|---|---|
| Chemistry | Al2SiO4(F,OH)2 |
| Crystal system | Orthorhombic |
| Colour | Blue, yellow, pink and colourless |
| Refractive index | 1.609 – 1.643 |
| Birefringence | 0.008 – 0.01 |
| Specific gravity | 3.49 – 3.57 |
| Mohs hardness | 8 |
| Luster | Vitreous |
| Transparency | Transparent to translucent |
| Toughness | Fair to good |