Rare blue calcantite

From our selection of collectible minerals, we propose a rare Calcantite in crystal on matrix from the Elba Island. Furthermore, it is characterized by crystals of an intense blue color, arranged in clearly visible aggregates on a dark matrix rich in chromatic contrasts, which enhances its aesthetic value and mineralogical importance. The specimen stands out for the quality of crystallization and for the overall aesthetic balance, with features that enhance its natural structure and visual impact. Calcantite is a pentahydrate copper sulfate (CuSO4·5H2O) that forms by oxidation of copper-bearing sulfide minerals in dry mining environments; being highly soluble in water, it is a delicate secondary mineral and relatively rare to find intact in a collection. The typical blue color is linked to the presence of the copper ion (Cu2+) in the crystal structure. The Capo Calamita mining area, on the island of Elba, is historically known for the exploitation of iron and copper minerals, which have given rise to numerous secondary alteration species like this. This is an ideal specimen for mineralogical collections, display, and for those who appreciate the natural beauty of minerals, including in the realm of crystal therapy and lithotherapy, according to the properties traditionally associated with the mineral species. All minerals are 100% natural and untreated, with rare exceptions always indicated in the description. The photographs are taken with professional lighting to best enhance colors and details; however, slight variations in hue may occur depending on the device or ambient light. Shipping is conducted via reliable and selected express couriers, with fast delivery (often 1-2 business days in Europe), tracked and insured shipping and professional and secure packaging, as confirmed by customer reviews. Deliveries can also occur the day after payment depending on the destination. It is possible to combine multiple purchases and receive them in a single shipment, even from auctions with different deadlines, simply by contacting us to arrange the consolidation. For important pieces, direct home delivery by appointment or at major European fairs is also available. We remind you that you can view all pieces in auction at the following link: www.catawiki.com/it/u/16653967 Follow us also in live auctions every Monday and Friday at 20:55! If you would like to watch videos, request additional information or satisfy some curiosities about the pieces in CataWiki's special auctions, do not hesitate to contact us. You can find more contacts here: www.italmineral.com/pages/contact

估價:$168.03

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