Beautiful Pair of Cube Calcite & Grape Agate Cluster on Custom Stands. A beautiful cube calcite crystal cluster composed of a myriad of crystal points that come out of the matrix from every direction, creating fabulous plays of light. Cube calcite crystal clusters are fascinating mineral formations composed of calcite (calcium carbonate, CaCO3), a common and widely distributed mineral known for its varied crystal forms and vibrant colors. Cube calcite refers specifically to calcite crystals that form in a cubic shape. This is a rare occurrence because calcite typically crystallizes in a trigonal-rhombohedral system. Mounted on a custom-made black steel base with steel support, it presents itself as an extremely elegant item that can be displayed in any corner of the house or office. Grape agate refers to a type of chalcedony that is known for its distinctive appearance, resembling a cluster of small, grape-like spheres. The proper mineralogical term for grape agate is "botryoidal chalcedony." Botryoidal refers to a rounded, globular, or grape-like formation. It forms through the concentric growth of chalcedony around a central nucleus. This process results in the characteristic grape-like clusters of small, rounded structures. Chalcedony is a type of microcrystalline quartz. It often occurs in massive form and is composed of tiny quartz crystals. When chalcedony forms in botryoidal shapes, as seen in grape agate, it creates a unique and visually appealing texture. APPROXIMATE DIMENSIONS including stand # Cube Calcite : Height: 15.3 cm Width: 6 cm # Grape Agate: Height: 16.4 cm Width: 9.4 cm NOTE: - One or more images provide a styled representation of a similar item. For exact details of the item for sale, please refer to the other images. No items in the styled photo are included in the sale. - THE WEIGHT MENTIONED IS INCLUDING STAND AND PACKING MATERIAL. THE SHIPMENT - 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.