This matched pair of beads is made from whole fossil ammonites from Madagascar. They have been carefully prepared to reveal some gem shimmering, iridescent gemmy fossil shell on parts of the surfaces. The beads have a 2mm side drill hole, measurements are shown in the title. CHAIN NOT INCLUDED. I have a variety of chains for sale in my store in different styles & lengths. Most, but not all, chains will fit most of my beads. If you want a specific chain for a specific bead check first. Feel free to check out all the items here in my DVHdesigns Store & don’t hesitate to contact me with general inquiries or about custom work that I could make & list for you. Thanks for shopping DVHdesigns! Here is some information from Wikipedia about ammonites which… “an extinct group of marine invertebrate animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs are more closely related to living coleoids (i.e. octopuses, squid, & cuttlefish) than they are to shelled nautiloids such as the living Nautilus species. The earliest ammonites appear during the Devonian, & the last species died out during the Cretaceous-Paleogene extinction event. Ammonites are excellent index fossils, & it is often possible to link the rock layer in which a particular species or genus is found to specific geological time periods. Their fossil shells usually take the form of planispirals, although there were some helically spiraled & nonspiraled forms (known as heteromorphs). 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 ram’s horns.[1] Often the name of an ammonite genus ends in -ceras, which is Greek (???a?) for “horn”.” Dvh Fossil Iridescent Ammonite Matched Pair Focal Beads 21x16x6 | 3825