So it will take about 13 years to become a psychiatrist, perhaps more if you do nto already have a bachelor's degree (4 years). ::::::::::::::::::::::::::::::::::::::... Source(s): http://wiki.answers.com/Q/How_long_does_... OR Â· 8 years ago. Thumbs up.
Other uses of onyx are wall panels, home floors, tables, and sink base. Onyx can be used as a novelty item. These items include vases, wine goblets, urns, bowls and lamps. It has incredible uses wherein it can accent the stone.t is heated in order to intensify the colour of the onyx. Onyx can be completed with a surface that is polished, just like a marble. It has a reflective and silken base finish, which deepens the colour of the stone and the contrasts.
They often used stones with several layers, each of a different color, which were then individually carved to produce a different pattern each year. They originally used the onyx name for a variety of marble having white and yellow veins.