mineral

Amethyst (Chevron Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Hardness: 7 on Mohs scale; Color: Purple with white quartz banding; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (Trigonal); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Hardness: 7 on Mohs scale
Color: Purple with white quartz banding
Luster: Vitreous (glassy)

Identified May 10, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Purple with white quartz banding; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (Trigonal); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Formation & geological history

Formed in hydrothermal veins and volcanic cavities. Chevron amethyst specifically forms when amethyst and white quartz grow together in alternating layers. This specimen is typically from Precambrian or newer volcanic deposits.

Uses & applications

Widely used for jewelry, lapidary art, tumble stones, and as a popular collectible for metaphysical enthusiasts.

Geological facts

The purple color is caused by natural irradiation of trace iron elements within the quartz lattice. Chevron amethyst is also known as Banded Amethyst or Dogtooth Amethyst.

Field identification & locations

Identified by its distinctive V-shaped (chevron) white quartz banding and characteristic purple hue. Commonly found in Brazil, Uruguay, and Africa. Collectors should look for vibrant purple saturation and clear geometric banding.

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