Tourmaline is a crystalline boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline is classified as a semi-precious stone. 3d illustration

Tourmaline is a crystalline boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline is classified as a semi-precious stone. 3d illustration - 62346915

Sulfuric acid (Sulfuric acid) molecule, 3D rendering. Atoms are represented as spheres with conventional color coding: hydrogen (white), carbon (grey), oxygen (red).

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