Black and Green on the below illustration of some sexual votives found in Assyria:
"Some items of a sexual nature from the Middle Assyrian temple of Ishtar at Asshur. A lead figurine in the form of a scene of sexual intercourse, apparently taking place on an altar. Models of human sexual organs, with holes for attachment and suspension: phalli of stone, and a pubic triangle and vulva of baked clay." (Note to fig. 124, accompanying an article titled "prostitution and ritual sex." pp. 150-152. Jeremy Black & Anthony Green. Gods, Demons and Symbols of Ancient Mesopotamia, An Illustrated Dictionary. University of Texas Press, Austin [published in co-operation with British Museum Press, London]. 1992. ISBN 0-292-70794-0)