igneous

K2 Jasper (K2 Granite)

Azurite-in-Granite

Hardness: 6-7 (Mohs scale); Color: White to light grey base with distinct bright blue spots; Luster: Vitreous to dull; Crystal structure: Phaneritic (granular); Cleavage: None (fractures irregularly); Specific gravity: 2.6-2.7

Hardness: 6-7 (Mohs scale)
Color: White to light grey base with distinct bright blue spots
Luster: Vitreous to dull

Identified March 16, 2026More igneous →

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Physical properties

Formation & geological history

Formed through the slow cooling of magma (granite) which was later infiltrated by copper-rich fluids that crystallized into azurite or malachite spots within the pore spaces of the quartz and feldspar.

Uses & applications

Primarily used in jewelry as cabochons, beads, and tumbled stones; also highly valued by mineral collectors for its unique aesthetic and rare origin.

Geological facts

Despite the trade name 'K2 Jasper,' it is geologically a granite, not a jasper. It is found exclusively at the base of K2, the world's second-highest mountain in the Karakoram Range of Pakistan.

Field identification & locations

Identify in the field by looking for the 'orbicular' blue spots of azurite set against a coarse-grained white and grey granite matrix. It is found only in the high-altitude debris fields near the K2 mountain peak.

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