Color-Zoned Fluorite Cubic, Chenzhou, China

This striking fluorite specimen from the Yaogangxian Mine in Chenzhou, Hunan Province, China, features beautiful color-zoned cubic crystals that demonstrate the fascinating optical properties of this beloved mineral. The distinct color zones — created by changing trace element concentrations and conditions during crystal growth — create a natural gradient effect visible through the transparent crystal faces, making each viewing angle reveal different color intensities and patterns.

Color zoning in fluorite occurs when the chemical environment changes during crystal growth. As each successive layer of calcium fluoride is deposited, variations in trace elements like yttrium, cerium, or iron produce different colors in different growth zones. The result is a crystal that records its own growth history in bands of color — a natural geological archive preserved in beautiful cubic form. This specimen displays this phenomenon with exceptional clarity.

Fluorite (CaF₂) crystallizes in the cubic system with a hardness of 4 on the Mohs scale. The Yaogangxian Mine is celebrated worldwide for producing fluorite specimens with vivid colors, sharp crystal geometry, and outstanding aesthetic appeal. Color-zoned specimens are particularly sought after because they combine scientific interest with visual beauty.

This specimen is an excellent choice for collectors interested in Chinese minerals, fluorite varieties, or crystal growth phenomena. The color zoning makes it a natural conversation piece and an educational display specimen that illustrates mineral crystallization processes. Ships with protective packaging and a specimen identification card.

China — dominant modern source for collector-grade specimens since the 1990s.