MILARITE (miniature)

Milarite (K2Ca4Al2Be4Si24O60•H2 is a rare variety of beryl and belongs to the osumilite group, characterized by its typically green or yellow crystals. Named by Gustav Kenngott in 1870 after Val Milar in Switzerland, the mineral's original specimens were sourced from Val Giuf, as noted by the GIA. Initially identified in green hues, yellow crystals were discovered in Mexico in 1968, where larger, transparent specimens have been cut into gemstones, albeit infrequently. Milarite's unique structure features a double ring configuration made up of two six-member silicate rings. This mineral can be found in various locations, including Switzerland, Brazil, Mexico, China, Namibia, and the United States, often occurring in Alpine fissures and marble xenoliths.