This black agate stone is a great
genuine gemstone that you can add to your collection of loose gemstones
at your jeweler’s workbench. Each of these onyx gemstones is a high
quality gemstone. Available in a wide range of shapes and cuts, these
loose black onyx gemstones will match any jewelry design you are working on
or repairing. These black gemstones will help you create beautiful
finished jewelry every time.