mineral
Carnelian and Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite and Limonite inclusions
Hardness: 6.5-7 Mohs; Color: translucscent orange-red (Carnelian) and pink with speckles (Strawberry Quartz); Luster: Vitreous to waxy; Structure: Hexagonal (trigonal); Specific Gravity: 2.6-2.7
- Hardness
- 6
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 Mohs; Color: translucscent orange-red (Carnelian) and pink with speckles (Strawberry Quartz); Luster: Vitreous to waxy; Structure: Hexagonal (trigonal); Specific Gravity: 2.6-2.7
Formation & geological history
Forms in hydrothermal veins and cavities. Carnelian forms as silica-rich water percolates through volcanic rock; Strawberry Quartz gains its color from hematite or goethite needle inclusions.
Uses & applications
Ornamental jewelry, beadwork, and decorative arts. Highly valued in metaphysical and collector circles.
Geological facts
Carnelian has been used for signet rings since Ancient Egypt and Rome. Strawberry quartz is often confused with Rose Quartz but is distinguished by its distinct mineral inclusions.
Field identification & locations
Identify by translucency, lack of bubbles (distinguishing from glass), and the presence of natural iron-oxide inclusions. Common sources include Brazil, India, and Madagascar.
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