An incredible polished sphere of Ruby on a custom wooden stand. A "ruby rock" typically refers to a natural formation or specimen that contains ruby crystals. Ruby is a red variety of the mineral corundum, which is composed of aluminum oxide. Here are some key points about ruby rocks. Rubies are often found in association with other minerals in metamorphic rocks, such as marble and schist, or in basaltic rocks. The specific geological conditions during the formation of these rocks contribute to the development of ruby crystals. Ruby rocks, when in their natural state, can be fascinating to collectors and enthusiasts interested in minerals and gemstones. The allure of ruby lies not only in its vibrant color but also in its historical and cultural significance. Approximate Diameter Diameter : 10 cm - The item comes with a custom stand - 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.