sedimentary
Pink Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Hardness: 6.5-7 Mohs; Color: Pink, reddish-brown, cream; Luster: Vitreous to dull; Crystal System: Hexagonal (Microcrystalline); Opaque; Specific Gravity: 2.58-2.91
- Hardness
- 6
- Color
- Pink, reddish-brown, cream
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6.5-7 Mohs; Color: Pink, reddish-brown, cream; Luster: Vitreous to dull; Crystal System: Hexagonal (Microcrystalline); Opaque; Specific Gravity: 2.58-2.91
Formation & geological history
Formed via the deposition of silica from water in sedimentary environments, often associated with volcanic ash or hydrothermal activity that introduces mineral impurities like iron and manganese to create the pink hue.
Uses & applications
Used primarily for ornamental purposes, jewelry (beads, cabochons), tumbled stones for collecting, and lapidary art.
Geological facts
Jasper is an opaque variety of chalcedony. The name Jasper is derived from the Greek word 'iaspis', meaning 'spotted stone'. It is known for its stability and vibrant, mottled patterns.
Field identification & locations
Identify by its opacity (unlike translucent agate), hardness (screeches glass), and smooth, waxy texture when tumbled. Often found in riverbeds or coastal areas in India, Brazil, and the USA.
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