Fluorite

Fluorite is a highly prized mineral among collectors due to its remarkable range of colors, crystal clarity, and unique properties. This calcium fluoride mineral crystallizes in the isometric system, often forming well-defined cubes, Ill-defined cubes, and occasionally octahedral shapes. Its colors span a broad spectrum, including vivid purples, greens, blues, yellows, and colorless varieties, with some specimens showcasing multiple colors in striking bands or zones.
 
Many fluorite specimens are also fluorescent, glowing in shades of blue or purple under ultraviolet light, adding an extra layer of fascination. Found in hydrothermal veins, sedimentary deposits, and igneous rocks, notable sources of collectible fluorite include China, England, Mexico, and the United States. Its vibrant colors, distinct crystal forms, and fluorescent qualities make fluorite a standout addition to any mineral collection.
 
This specimen has intricate modified crystal faces that present an M.C. Escher-esque growth pattern, which many refer to as "QR Code fluorite".   The matrix is littered with tiny cubes with the largest standing out prominently. showing off the incredible patterns.  Not to be mistaken for purple pattern fluorite, which is an entirely different Chinese locality and style.
 
From Yongchun Mine, Fujian, China.  Shown as recommended on the Small Adjustable Mineral Stand, not included with purchase.