Rare Blue Spinel Gemstone Crystals in Marble Rock Matrix
Dimensions (millimeters): 80 x 40 x 30
Dimensions (inches): 3.1 x 1.6 x 1.2
Origins: from Aliabad, Hunza Valley, Northern Areas, Pakistan, South Asia (a very dangerous place to seek minerals)
The blue Spinel is colored from the inclusion of Cobalt in the crystal lattice. As is common in spinel these are twinned crystals. Spinel has been confused with ruby and sapphire for over 1000 years. Several of the most spectacular spinels ever discovered have been mounted in crown jewels under the assumption that they were rubies or sapphires.
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