Mineral: Fluorite
Locality: Vinheiros Mine, level 4, Vale das Gatas mining group, Sabrosa, Vila Real District, Norte Region, Portugal
Dimensions: Specimen size: 1.7 × 1.6 × 1.3 cm

Description: Cubic crystal with two very well differentiated growth phases, the first one a cubic nucleus with a very deep violet color, and a second, a peripheral polycrystalline growth, transparent and with sky blue color. The sample is from the collection of Pedro Alves, the author of the article “Vale das Gatas Mining District” in the Mineral Up magazine (2017/1)

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