mineral

Yellow Agate

Agate (Varietal form of Chalcedony/Quartz, SiO2)

Hardness: 6.5-7 on Mohs scale; Color: Translucent to opaque yellow, honey, or amber; Luster: Waxy to vitreous; Crystal Structure: Trigonal (Microcrystalline); Specific Gravity: 2.58-2.64

Hardness: 6
Color: Translucent to opaque yellow, honey, or amber
Luster: Waxy to vitreous

Identified May 18, 2026More mineral →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Translucent to opaque yellow, honey, or amber; Luster: Waxy to vitreous; Crystal Structure: Trigonal (Microcrystalline); Specific Gravity: 2.58-2.64

Formation & geological history

Formed as a result of deposition of silica from groundwater in the cavities of igneous rocks, particularly volcanic lavas. Can also form in sedimentary or metamorphic environments over millions of years.

Uses & applications

Used primarily in jewelry (cabochons, beads), decorative carvings, and as a healing stone in metaphysical practices. Industrially used for precision pendulums and laboratory mortars and pestles due to its hardness.

Geological facts

Agate was named by Theophrastus, a Greek philosopher, who discovered the stone along the shore line of the river Achates in Sicily. Yellow agate is specifically associated with the solar plexus chakra in alternative traditions.

Field identification & locations

Identify by its waxy luster, translucency, and absence of visible crystals. It is often found in river beds, beaches, or weathered volcanic ash deposits. Common locations include Brazil, India, and the United States.

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Mineral/Rock

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