igneous

K2 Jasper (K2 Granite)

Azurite in Granite (K(Mg,Fe)3AlSi3O10(OH,F)2 + Cu3(CO3)2(OH)2)

Hardness: 6-7 (Mohs scale), Color: White to grey granite matrix with bright blue circular inclusions, Luster: Vitreous to dull, Crystal Structure: Monoclinic (Azurite) in Phaneritic matrix, Cleavage: Indistinct in matrix, Specific Gravity: 2.6-2.9

Identified March 14, 2026More igneous →

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Physical properties

Formation & geological history

Formed through the secondary mineralization of azurite within a pre-existing granite body. The azurite spots crystallized from copper-rich fluids that permeated the granite at high altitudes of the Karakoram Range.

Uses & applications

Primarily used for lapidary work, jewelry making (beads, cabochons), and as a popular semi-precious stone for metaphysical crystals and mineral collecting.

Geological facts

Despite being called 'K2 Jasper,' it is technically a granite, not a jasper. It is exclusively found near the base of K2 (the world's second-highest mountain) in Pakistan, making it rare and difficult to mine.

Field identification & locations

Identify by looking for the distinct 'ink-blat' or 'raindrop' blue spots of azurite against a speckled white and grey granite background. It is mostly sourced from the Skardu area of Pakistan.

Other igneous specimens

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Blue Apatite

Fluorapatite (Ca5(PO4)3F)

mineral

Dark Igneous Rock (Likely Basalt or Diabase)

Basalt (extrusive igneous rock) or Diabase (intrusive igneous rock - also known as Dolerite), largely composed of plagioclase feldspar, pyroxene (augite), and sometimes olivine and amphibole. Exact mineralogy would require thin section analysis.

Igneous

Magnetite

Iron(II,III) oxide (Fe3O4)

mineral

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

mineral

Blue Apatite

Apatite (Group), Ca5(PO4)3(F,Cl,OH)

mineral

Magnetite

Magnetite (Fe3O4)

mineral