The Medium Skull & Octopus by Lee Downey is one of the final pieces in the series. With less than 10 world wide, this hand carved Russian Jet skull and his blue resin octopus are a colorful addition to your decor. What is Jet? It is a type of lignite, the lowest rank of coal and is a gemstone. Unlike many gemstones, jet is not a mineral, but is rather a mineraloid. It is derived from wood that has changed under extreme pressure. Measures approx. 5" x 8" x 5" and weighs about 5lbs