Ebony is a dense black/brown hardwood, coming from several species in the genus Diospyros, which also includes the persimmon tree. A few Diospyros species, such as macassar and mun ebony, are dense enough to sink in water. Ebony is finely textured and has a mirror finish when polished, making it valuable as an ornamental wood. It is often cited as one of the most expensive woods in the world. Etymology. The word ebony comes from the Ancient Egyptian hbny, through the Ancient Greek ἔβενος (ébenos), into Latin (ebenus) and Middle English. Species.
https://en.wikipedia.org/wiki/Ebony