igneous
Pink-and-white quartz-rich rock, likely rose quartz-bearing pegmatite
Quartz (SiO₂) with pink microcline feldspar and possible albite/muscovite; likely granitic pegmatite
AI-generated identification · may be incorrectHardness about 6–7 (quartz; feldspar 6), pale pink, white, and gray; mostly vitreous to pearly luster with coarse interlocking crystals and feldspar cleavage. The rough, granular texture is consistent with a pegmatitic rock rather than a single gemstone.
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Physical properties
Hardness about 6–7 (quartz; feldspar 6), pale pink, white, and gray; mostly vitreous to pearly luster with coarse interlocking crystals and feldspar cleavage. The rough, granular texture is consistent with a pegmatitic rock rather than a single gemstone.
Formation & geological history
Formed when water-rich granitic magma cooled slowly in a late-stage pegmatite vein, allowing large quartz and feldspar crystals to grow; commonly Precambrian to Mesozoic depending on locality.
Uses & applications
Used as a collector specimen and, when cleaner, as ornamental stone or cabochon material; quartz and feldspar pegmatites are also mined for ceramics, glass, and industrial minerals.
Geological facts
The pink color may come from iron-related defects in quartz or, more commonly, pink microcline feldspar. The image does not show enough crystal faces or diagnostic tests for a precise locality-level identification.
Field identification & locations
Look for glassy gray-clear quartz, blocky pink feldspar, and possible flaky mica; quartz should scratch glass, while feldspar generally will not. Common in granitic terrains and pegmatite districts worldwide, including Maine, California, Brazil, and Madagascar.
