Polishing method of black coral

Though black coral's living tissue is brilliantly colored, it takes its name from the distinctive black or dark brown color of its skeleton. In fact, your black coral will be in need of a good polishing if you want to turn it into something spectacular. With some simple tools, you can have your black coral creation shining and ready for display.
Use sandpaper to sand the coral down to a silk-like finish. Pay attention to sand direction. Begin sanding in a circular motion from a central point in the piece of coral and sand outward, against the natural grain of the coral.
Make the buffer pad attach to the buffing machine, making sure that the pad is secure. Many buffer pads with metal rods on their backs will also fit into drills just like any drill bit.
Let the buffing machine under full power, and try your best to make sure that the coral does not over heat. Apply pressure on the areas that have the most scrapes from sanding. If you fell the black coral is too hot, stop to cool it and then begin again. Make sure the buffer pad is well lubricated throughout the buffing process until it has finally obtained a high shine finish.
Now your black coral has been polished well, and it is shiny for your wearing.