Wonderful sphere of green smithsonite on a custom stand. Green Smithsonite, also known as green zinc spar, is a mineral that belongs to the carbonate mineral group. It is a secondary mineral that forms as a result of the weathering and oxidation of primary zinc ore deposits.Smithsonite typically occurs in a variety of colors, including green, blue, pink, yellow, and brown. The green color in smithsonite is often attributed to the presence of traces of copper. It is a relatively soft mineral, with a hardness of 4 to 4.5 on the Mohs scale, making it susceptible to scratching. APPROXIMATE DIAMETER : 11 cm > The weight mentioned is including packing material. THE SHIPPING -The item will be sent with a Track & Trace code via DHL Parcel, DPD or postNl. The tracking will be updated in your Catawiki lot once your parcel has been dropped off. -Please check regularly to avoid your parcel being returned to us, in which case the buyer will be responsible for the shipping costs of the 2nd shipment. -For tracking to Spain and Portugal please use this link and add the tracking number from your Catawiki lot https://clientesparcel.dhl.es/LiveTracking/Home -WE DO NOT COMBINE SHIPPING!!! -If you have any questions about your parcel please contact us using the Catawiki message service. We will try to reply within 3 working days.