anaglyph - anything carved in low relief

carving - a sculpture created by carving (as wood or ivory or stone)

glyph - glyptic art in the form of a symbolic figure carved or incised in relief

glyptics, lithoglyptics - the art of engraving on precious stones

diaglyph, intaglio - glyptic art consisting of a sunken or depressed engraving or carving on a stone or gem (as opposed to cameo)