igneous
Rose quartz–bearing pegmatite (probable)
Quartz (SiO₂) in a granitic pegmatite matrix, possibly with feldspar
AI-generated identification · may be incorrectPale pink to whitish, with a dull-to-glassy luster and irregular fracture; quartz hardness is 7 Mohs, while associated feldspar is about 6. Crystals appear massive rather than sharply formed, and the specimen may contain weathered iron staining.
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Physical properties
Pale pink to whitish, with a dull-to-glassy luster and irregular fracture; quartz hardness is 7 Mohs, while associated feldspar is about 6. Crystals appear massive rather than sharply formed, and the specimen may contain weathered iron staining.
Formation & geological history
Likely formed from a late-stage, silica-rich granitic melt in a pegmatite vein, where quartz and feldspar crystallized slowly in cavities. Precise geological age and locality cannot be determined from the photograph.
Uses & applications
Rose quartz is used for carvings, ornaments, cabochons, and inexpensive jewelry; pegmatite is also an important source of quartz, feldspar, lithium, and other industrial minerals.
Geological facts
The pink color commonly results from microscopic inclusions or defects in quartz rather than manganese alone. Natural rose quartz typically occurs massive, whereas transparent pink quartz crystals are uncommon.
Field identification & locations
Identify by its pink coloration, glassy quartz patches, hardness, and lack of obvious layering or foliation; a steel file should not readily scratch quartz. Common sources include Brazil, Madagascar, India, and the United States.
