Mineral collection old specimen of white Aragonite from Mexico +3.2kg

Exceptional mineralogical collector's item, even museum. Very large specimen of white aragonite, "cave calcite" from mexico, chihuahua. Crystalline mineral formation resembling a coral skeleton or a cauliflower. This one is very varied in its construction, we observe ball crystals, long crystals, covered with crystalline points. Approximately 24x19x19cm for approximately 3.290kg, rare dimensions for this type of piece. This is a specimen from an old collection, it does, unfortunately, have a certain number of gaps, I would say that between 20 and 30 crystal heads are broken and missing, more or less discreet. We will also note some soiling from time, clean overall. The specimen remains impressive and very beautiful.