The Serpentine Group
Serpentine is the "brand name" for a group of polymorphous rocks within the serpentine group; these rocks are sometimes called serpentinite. Polymorphous means that the rocks have the same chemical compound with the molecules arranged differently. So the hydrous magnesium iron phyllosilicate polymorphs of serpentine are classified as; antigorite, chrysotile, and lizardite all chemically the same, just having the chemicals bonded in a different way. In other words; the serpentine group consists not only of serpentine, but of antigorite, lizardite, and chrysotile: all green stones with a scaly appearance and the same basic chemical structure.
The appearance of serpentine varies depending on the structure of the bonds within the stone at the time of metamorphosis. Antigorite is named for the Antigoro Valley in Italy, where the stone is most commonly found with quarries. Antigorite is also found in Rhode Island, where it is compacted and known as bowenite, Rhode Island's state mineral; as well as found in Maryland and Pennsylvania. Antigorite forms in fine plate-like crystals bonded with mica and is used for carvings, beads, and other jewelry applications and can be used as a substitute for jade.
Kosadinka Dobreva created this serpentine pendant with a round cabochon and a Viking Weave Bezel