metamorphic
Ruby in Quartz with Tourmaline
Corundum (Al2O3) in Silicon Dioxide (SiO2) with Schorl
Hardness: Quartz (7), Ruby (9); Color: White/clear matrix with pink/red crystals; Luster: Vitreous to greasy; Crystal structure: Trigonal/Hexagonal; Cleavage: None/Indistinct; SG: 2.65 - 4.0
- Hardness
- Quartz (7), Ruby (9)
- Color
- White/clear matrix with pink/red crystals
- Luster
- Vitreous to greasy
Identified More metamorphic →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: Quartz (7), Ruby (9); Color: White/clear matrix with pink/red crystals; Luster: Vitreous to greasy; Crystal structure: Trigonal/Hexagonal; Cleavage: None/Indistinct; SG: 2.65 - 4.0
Formation & geological history
Formed through high-grade regional metamorphism or in hydrothermal veins and pegmatites where aluminum-rich fluids crystallize within silica-rich environments.
Uses & applications
Primarily used for mineral collecting, metaphysical purposes, and occasionally carved into decorative or ornamental items.
Geological facts
While Rubies are typically found in marble or basalt, finding them embedded in massive quartz is rarer and indicates a specific chemical environment rich in both alumina and silica.
Field identification & locations
Identify by the red hexagonal crystal shapes (rubies) embedded in a translucent white matrix. Commonly found in Madagascar, India, and parts of East Africa.
More like this
