Beautiful set of decorative minerals consisting of cube calcite crystal cluster & a crystallized ammonite. A calcite cube refers to a naturally formed or artificially shaped crystal of calcite that exhibits a cubic form. Calcite typically crystallizes in the trigonal crystal system, forming rhombohedral or scalenohedral crystals. However, under certain conditions, calcite can form cubic crystals. These cubic crystals are relatively rare compared to other forms of calcite. Calcite cubes are characterized by their geometric shape, resembling a cube with six square faces. The edges and corners of the cube are often well-defined, creating a symmetrical and aesthetically pleasing crystal. The formation of calcite cubes can be influenced by factors such as temperature, pressure, and chemical composition of the surrounding environment. Cubic calcite crystals are typically found in areas where there was enough space for crystal growth without interference from other minerals. Calcite cubes are fascinating examples of the diversity of crystal forms that minerals can take, showcasing the natural beauty and symmetry inherent in crystalline structures. Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids (i.e., octopuses, squid and cuttlefish) than they are to shell nautiloids such as the living Nautilus species. The earliest ammonites appeared during the Devonian, with the last species vanishing during or soon after the Cretaceous–Paleogene extinction event. Ammonites are excellent index fossils and linking the rock layer in which a particular species or genus is found to specific geologic time periods is often possible. Their fossil shells usually take the form of planispirals, although some helically spiraled and nonspiraled forms (known as heteromorphs) have been found. The name "ammonite", from which the scientific term is derived, was inspired by the spiral shape of their fossilized shells, which somewhat resemble tightly coiled rams' horns. Pliny the Elder (d. 79 AD near Pompeii) called fossils of these animals ammonis cornua ("horns of Ammon") because the Egyptian god Ammon (Amun) was typically depicted wearing rams' horns. Often, the name of an ammonite genus ends in -ceras, which is from κέρας (kéras) meaning "horn". APPROXIMATE DIMENSIONS, including stand Crystal: Height: 17.4 cm - Width: 8.4 cm Ammonite: Height: 15 cm - Width: 8 cm DISCLAIMER - Please be aware one of the item in these pictures have been taken in a dark studio; colors may vary depending on the environment. - 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.