mineral
Tumbled Serpentinite and Rose Quartz
Serpentine group (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al)2O5(OH)4 and Quartz (SiO2)
Hardness: Serpentine 2.5-5.5, Quartz 7. Color: Dark green with mottled patterns (left) and pale translucent pink (right). Luster: Waxy to vitreous. Cleavage: Poor or absent in quartz, basal in serpentine minerals. Specific Gravity: ~2.6-2.65.
- Hardness
- Serpentine 2
- Luster
- Waxy to vitreous
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Physical properties
Hardness: Serpentine 2.5-5.5, Quartz 7. Color: Dark green with mottled patterns (left) and pale translucent pink (right). Luster: Waxy to vitreous. Cleavage: Poor or absent in quartz, basal in serpentine minerals. Specific Gravity: ~2.6-2.65.
Formation & geological history
Serpentine forms via hydrous alteration (serpentinization) of ultramafic igneous rocks (peridotite). Rose Quartz forms in late-stage pegmatites, deriving its soft pink hue from trace inclusions of dumortierite or microscopic fibrous minerals.
Uses & applications
Commonly used as tumbled stones, polished decorative specimens, metaphysical crystals, cabochons for jewelry, and lapidary art.
Geological facts
Serpentinite is the state rock of California. Rose Quartz gets its name from its soft rose-pink color, though unlike clear quartz, it rarely forms well-defined crystal faces in large sizes.
Field identification & locations
Field Identification: The green stone displays mottled/striated fibrous patterns characteristic of serpentine/actinolite minerals. The pink stone is identified by its vitreous luster, pale pink coloration, and conchoidal fracture visible beneath the polish. Locations include Brazil, South Africa, Madagascar, and the US.
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