Jasper is an opaque chalcedony that comes in a wide variety of colors. Fancy Jasper is the name given to the group of jasper known for its scrumptious color palette of mauves, lilacs, creams and greens all mixed together. The term "Jasper" itself comes from the Greek word iaspi, meaning "spotted stone." Jasper is a gemstone that has been used all over the world. The ancient priests of Egypt carved jasper into beautiful jewelry while the Minoans used jasper for seals.