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DOOAK-S22-112
Few minerals change hardness depending on the direction you test them, and kyanite is one of them.
Kyanite typically grows as long, bladed crystals, and this rough formation is left in its raw state, with no cutting or polishing. The close up photo shows the texture in detail, and the in hand and ruler photos make the size clear: about 5.25 inches across and 3.5 inches tall, a hand filling chunk for a desk or a mineral shelf. Blue is the most common kyanite color, which makes it a classic choice for someone starting a mineral collection or adding a blue specimen to one. Front, back and side views let you see it all the way around. You receive the exact formation shown.
Measurements are about 5.25 by 4 inches, with a height of about 3.5 inches.
Kyanite is an aluminum silicate that forms long, bladed crystals, sometimes radiating. Blue is its most common color, though it also occurs in green, black and clear. Its hardness changes with direction, about 4.5 to 5 on the Mohs scale along the blade and 6.5 to 7 across it, and its strong cleavage means blades can split.
Stone Meaning: Blue kyanite is traditionally associated with alignment and communication.
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