2. Description of Piece: A centaur, a part-man, part-horse mythological creature, wields a branch while running. Seemingly kneeling with one knee down, his pose is actually an artistic convention that signified fast motion in Archaic Greek art. This centaur has human front legs rather than the more usual equine ones.
Rock crystal. The J. Paul Getty Museum, Villa Collection, Malibu, California
Your two questions
What figure is the art of?
2. What type of material was used?