This is an ancient andara glass amulet/pendant carving.  Neolithic glass, agate, and jade carvings have been found in parts of Inner Mongolia, ranging down to Liaoning, China.  This piece is from that region.  The carving style and iconography depicted are indicative of the Neolithic Hongshan (Red Mountain) Culture, dated from 4700 to 2900 BC.  I have been researching andara glass for more than 10 years now.  One of the first notes I made back at the beginning of my research was that, 'if andara is 'real', then ancient artifacts made from it must surely exist'.  I am happy to say that they do exist, and this is one of them.  I also learned during my research that this material was regarded as an imperial national treasure in China until the 1700's, and according to ancient temple and monastic documents, was as hard to cut and carve as jade.  It is extremely resistant to weathering and corrosion caused by soil acids over very long periods of time.  This piece is 3.30 inches tall, and weighs 83 grams.  There are suspension holes on the back of the piece for wearing or hanging.  Anthropologists call these 'double bevel bore holes', and they are period-correct for the Neolithic Hongshan Culture.  The large central hole is also carved in this style.  I recommend viewing with a 30X jewelers loupe for maximum appreciation of the interior and exterior details.  Thanks for shopping :)