• Location: Namibia
• Weight: 2.5g
• Dimensions: 2.3 x 1 x 0.6 cm
• DETAILED DESCRIPTION

Banded Amethyst – quartz with characteristic banded structure

Banded amethyst is a variety of amethyst characterized by alternating color zones within a single crystal. The typical combination of purple, clear, or milky bands forms due to variations in conditions during crystal growth. These zones can be subtle or strongly contrasting, creating a distinctive banded pattern.

Appearance and processing

Banded amethyst is often cut into cabochons or faceted stones; the type of cut influences the final appearance of the pattern. Cabochons highlight the soft color transitions, while faceted stones emphasize the contrast between different zones. Each piece is unique due to its internal structure.

Formation of banded amethyst

Amethyst forms through crystallization from mineral solutions within rock cavities. The banded structure develops due to fluctuations in chemical conditions, particularly iron content and radiation intensity during crystal growth. These changes are recorded in the mineral structure as individual color layers.

Amethyst deposits

Banded amethysts are found in many locations around the world, especially in Brazil, Uruguay, Namibia, Russia, and Madagascar. Each location produces material with different types of banding and color intensity.

Properties and characteristics

Banded amethyst has a hardness of 7 on the Mohs scale, is transparent to translucent, and has a vitreous luster. Its typical characteristic is the internal banding, which affects both its appearance and how it is processed. Thanks to its durability, it is suitable for use in jewelry.