mineral
Agate (Brecciated / Moss Agate with Jasproid Inclusions)
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 6.5-7 on the Mohs scale. Color: Banded white, brown, red, orange, and gray hues. Luster: Waxy to vitreous. Crystal system: Microcrystalline/trigonal (chalcedony variety). Cleavage: None (conchoidal fracture). Specific gravity: 2.58-2.64.
- Hardness
- 6
- Color
- Banded white, brown, red, orange, and gray hues
- Luster
- Waxy to vitreous
Identified More mineral →
Explore Agate (Brecciated / Moss Agate with Jasproid Inclusions) in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6.5-7 on the Mohs scale. Color: Banded white, brown, red, orange, and gray hues. Luster: Waxy to vitreous. Crystal system: Microcrystalline/trigonal (chalcedony variety). Cleavage: None (conchoidal fracture). Specific gravity: 2.58-2.64.
Formation & geological history
Formed through precipitation of silica from groundwater inside cavities (vesicles) within volcanic host rocks or fractured host rocks, creating characteristic concentric and brecciated banding patterns.
Uses & applications
Widely used for lapidary arts, cabochon cutting, jewelry, decorative polished slabs, and mineral collections.
Geological facts
Agate is a banded form of chalcedony. The rich red and reddish-brown inclusions are due to iron oxides (hematite/goethite) mixed with silica during crystallization.
Field identification & locations
Identified by its distinctive microcrystalline translucency, multi-colored banding, and fracture patterns. Commonly found in Brazil, Uruguay, Madagascar, the United States, and Mexico. Collectors value distinct patterns and contrast.
