Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. inorganic material
7. mineral
8. quartz (mineral)

Additional parents:

1. top of the aat hierarchies
2. Materials Facet
3. Materials
4. materials
5. materials by composition
6. inorganic material
7. rock
8. rock by form
9. stone
10. stone by quality
11. gemstone
12. gemstones by specific type

Narrower term/s

• agate (chalcedony)[+]
  • moss agate
• onyx (mineral)[+]
  • sardonyx
• bloodstone
• chrysoprase
• jasper
• carnelian
• sard

Anotations

Scope note:

A translucent, quartz usually with a waxy luster, having tiny microscopic crystals that are sometimes arranged in slender fibrous bands; occurring in various colors, usually red, blue, or green.