The Black Onyx
The name of this gemstone comes from the Greek onys: "claw" or "fingernail".
The black onyx is known since the ancient Egyptians to make bowls and pottery. The Romans used it to make jewelry and amulets.
December's Birthstone Meaning
The black onyx is a stone believed to help with self-centering, increasing balance, reducing stress, and protecting the wearer from negative energies.
Other positive benefits of this December's birthstone are believed to be a help with changing bad habits and the gift of eloquence. Gift it to a friend born in December and who needs a little help with public speaking.