igneous
K2 granite (K2 stone)
Granite composed mainly of orthoclase and plagioclase feldspar, quartz, and biotite or hornblende
AI-generated identification · may be incorrectCoarse-grained, mostly white to gray with dark speckles; hardness about 6–7 Mohs, vitreous to dull luster, and interlocking crystals with no regular cleavage. The blue spots typical of K2 stone are not apparent in this small specimen.
Identified More igneous →
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Physical properties
Coarse-grained, mostly white to gray with dark speckles; hardness about 6–7 Mohs, vitreous to dull luster, and interlocking crystals with no regular cleavage. The blue spots typical of K2 stone are not apparent in this small specimen.
Formation & geological history
A plutonic igneous rock formed when magma cooled slowly underground; the K2 variety comes from the Karakoram region and is generally associated with ancient Himalayan-area crustal rocks.
Uses & applications
Used as a decorative stone and sold as a lapidary or collector specimen; K2 stone is also commonly fashioned into beads and cabochons.
Geological facts
“K2 granite” is a trade name for granite reported from near K2 mountain, not a distinct mineral species.
Field identification & locations
The pale, coarse crystalline matrix and scattered dark minerals are consistent with granite, but the photo alone cannot confirm a K2 locality. Look for interlocking quartz and feldspar grains; avoid identifying it solely by trade name.
