gemstone
Amethyst and Rose Quartz Jewelry
Silicon Dioxide (SiO2)
Hardness: 7 (Mohs); Color: Pale violet to lavender (Amethyst), soft pink (Rose Quartz); Luster: Vitreous/Glassy; Structure: Hexagonal (Trigonal); Cleavage: None/Conchoidal fracture.
- Hardness
- 7 (Mohs)
- Color
- Pale violet to lavender (Amethyst), soft pink (Rose Quartz)
- Luster
- Vitreous/Glassy
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Physical properties
Hardness: 7 (Mohs); Color: Pale violet to lavender (Amethyst), soft pink (Rose Quartz); Luster: Vitreous/Glassy; Structure: Hexagonal (Trigonal); Cleavage: None/Conchoidal fracture.
Formation & geological history
Formed in igneous and metamorphic rocks, typically within hydrothermal veins or cavities (geodes). Amethyst gains its color from iron impurities and irradiation; Rose Quartz from titanium, manganese, or iron micro-inclusions.
Uses & applications
Primarily used in jewelry (beads, bangles), ornamental carvings, and by crystal collectors for aesthetic and metaphysical purposes.
Geological facts
Amethyst was once considered a 'Cardinal Gem' on par with diamonds. Rose Quartz is often cloudy due to microscopic inclusions of dumortierite. The lavender bangle likely consists of Chalcedony or Jadeite dyed to mimic high-grade lavender jade.
Field identification & locations
Identify by hardness (should scratch glass), conchoidal fracture, and presence of natural inclusions or zones of color. Found worldwide with major deposits in Brazil, Madagascar, and Uruguay.
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