sedimentary and metamorphic
Mixed Agate and Lapis Lazuli Bracelet
Chalcedony (SiO2) and Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2
Hardness: 6.5-7 (Agate), 5-5.5 (Lapis); Colors: Green, blue, purple (dyed/coated), and grey; Luster: Vitreous to waxy; Structure: Microcrystalline and massive.
- Hardness
- 6
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 (Agate), 5-5.5 (Lapis); Colors: Green, blue, purple (dyed/coated), and grey; Luster: Vitreous to waxy; Structure: Microcrystalline and massive.
Formation & geological history
Agates form in volcanic cavities as groundwater silica precipitates. Lapis is formed via regional metamorphism of limestone. Many beads here appear dyed or aura-coated (titanium treated) for color.
Uses & applications
Primarily used for costume jewelry, beaded bracelets, and metaphysical/holistic healing practices.
Geological facts
Lapis lazuli has been mined in Afghanistan for over 6,000 years. The purple and iridescent beads in this image are likely natural stones that have undergone heat treatment or vapor deposition to enhance their color.
Field identification & locations
Identify by checking for natural banding in the green moss agates and the characteristic gold pyrite flecks in the blue lapis beads. Common in crystal shops and global jewelry markets.
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