Wonderful sphere of green smithsonite on a custom stand Green smithsonite is a mineral that belongs to the carbonate group. It is named after James Smithson, the founding donor of the Smithsonian Institution. Smithsonite occurs in a wide range of colors, including green, and is prized for its vibrant and translucent appearance. Green smithsonite is typically found as botryoidal or stalactitic formations, often with a banded or concentric growth pattern. It has a hardness of 4 to 4.5 on the Mohs scale, which makes it relatively soft compared to other gemstones. Its luster is vitreous to pearly, and its transparency can range from transparent to translucent. The green color of smithsonite is usually caused by the presence of trace amounts of copper. The intensity of the green hue can vary, ranging from pale green to a more intense, saturated green. Other colors, such as blue, yellow, and pink, can also occur in smithsonite due to different impurities. Approximate Dimension 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.