YELLOW CALCITE AESTHETIC TWIN with DOLOMITE

From our selection of collectible minerals we propose an aesthetically pleasing group of Calcite crystals with Dolomite from the San Giovanni Mine, Iglesias, Sardinia. Moreover, it features yellow Calcite crystals with well-developed faces, in association with small white Dolomite crystals on a contrasting matrix, which enhances their aesthetic value and mineralogical significance. The specimen stands out for the quality of crystallization and for the overall aesthetic balance, with features that highlight its natural structure and visual impact. The yellow coloration of Calcite is often due to subtle inclusions of iron oxides or organic substances within the crystal lattice. The San Giovanni Mine, in the Iglesias mining district, has been for over a century one of Sardinia’s most important sources of lead and zinc, and today is renowned among collectors for its well-crystallized Calcite and Dolomite specimens. Dolomite, CaMg(CO3)2, differs from Calcite by the presence of magnesium in the crystal lattice, which slightly modifies its structure and physical properties. This is an ideal specimen for mineralogical collections, display, and for those who appreciate the natural beauty of minerals, including crystal therapy and lithotherapy, in line with the properties traditionally associated with the mineral species. All minerals are 100% natural and untreated, with rare exceptions always indicated in the description. Photos are taken with professional lighting to best showcase colors and details; however, slight variations in shade may occur depending on the device or ambient light. Shipping is carried out via reliable and carefully selected express couriers, with fast delivery (in many cases 1-2 working days within Europe), tracked and insured shipping and professional, secure packaging, as confirmed by customer reviews. Deliveries may also take place the day following payment depending on the destination. It is possible to combine multiple purchases and receive them in a single shipment, even from auctions with different end dates, simply contact us to arrange consolidation. For important pieces, direct home delivery or delivery at major European fairs by appointment is also available. Remember that you can view all the pieces in auction at the following link: www.catawiki.com/it/u/16653967 Follow us also in the live auctions every Monday and Friday at 8:55 PM! If you would like to view videos, request additional information, or satisfy curiosities about the pieces in CataWiki’s special auctions, do not hesitate to contact us. You can find other contacts here: www.italmineral.com/pages/contact

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