Tourmaline
NaMg3Al6B3Si6O31H4
A complex gemstone that comes in almost every colour of the rainbow
One of the most colourful minerals on Earth — a single crystal can display a dozen colours at once.
Material
Gallery-wrapped canvas on a solid wood stretcher, 0.75″ deep — ready to hang.
$40.00
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Crystallography
| Catalogue identity | Tourmaline — R3m |
| Formula | NaMg3Al6B3Si6O31H4 |
| Crystal system | trigonal |
| Space group | R 3 m :H |
| Lattice (a, b, c) Å | 15.951, 15.951, 7.24 |
| Angles (α, β, γ) ° | 90, 90, 120 |
| Density (g/cm³) | 2.994 |
Structure data: Crystallography Open Database · Public domain (CC0)