Corundum From Sagstven, Arnes, Norway (Box Included) Collectors Piece, Home Décor, Gift

Corundum From Sagstven, Arnes, Norway (Box Included) Collectors Piece, Home Décor, Gift

Weight 10g
Size 2cm by 0.2cm
Thickness 1.5cm

Corundum is a crystalline form of aluminium oxide (Al2O3) typically containing traces of iron, titanium, vanadium and chromium. It is a rock-forming mineral. It is a naturally transparent material, but can have different colours depending on the presence of transition metal impurities in its crystalline structure. Corundum has two primary gem varieties: ruby and sapphire. Rubies are red due to the presence of chromium, and sapphires exhibit a range of colors depending on what transition metal is present. A rare type of sapphire, padparadscha sapphire, is pink-orange.