gemstone
Yellow Agate
Silicon Dioxide (Chalcedony), SiO2
AI-generated identification · may be incorrectHardness: 6.5 to 7 on the Mohs scale; Color: Yellow, golden, translucent; Luster: Waxy to vitreous; Crystal structure: Trigonal (microcrystalline quartz); Cleavage: None, exhibits conchoidal fracture; Specific gravity: 2.58 to 2.64
- Hardness
- 6
- Color
- Yellow, golden, translucent
- Luster
- Waxy to vitreous
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Physical properties
Hardness: 6.5 to 7 on the Mohs scale; Color: Yellow, golden, translucent; Luster: Waxy to vitreous; Crystal structure: Trigonal (microcrystalline quartz); Cleavage: None, exhibits conchoidal fracture; Specific gravity: 2.58 to 2.64
Formation & geological history
Formed in the cavities of volcanic and metamorphic rocks through the slow deposition of silica-rich groundwater solutions over millions of years.
Uses & applications
Widely used in making jewelry, ornamental carvings, polished specimens, and lapidary art.
Geological facts
Agates are among the most popular stones used in ancient healing and talismans. Yellow varieties often owe their color to iron oxide impurities trapped during formation.
Field identification & locations
Can be identified by its waxy luster, conchoidal fracture, and microcrystalline structure. Found worldwide, with notable deposits in Brazil, India, Madagascar, and the USA.
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