Topaz

Back to gemstone

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 / materialTopaz
ChemistryAl2SiO4(F,OH)2
Crystal systemOrthorhombic
ColourBlue, yellow, pink and colourless
Refractive index1.609 – 1.643
Birefringence0.008 – 0.01
Specific gravity3.49 – 3.57
Mohs hardness8
LusterVitreous
TransparencyTransparent to translucent
ToughnessFair to good