The round brilliant cut is the most popular shape of diamond. For hundreds of years, diamond cutters have been working with this cut to maximize its brilliance and fire. While this cut offers great flexibility within the four Cs, you will want to select higher quality grades to bring out the most brilliance within a round diamond.
Today, when we think of Onyx, we often preface the word with black to distinguish it from other varieties. This gem comes in white, reddish brown, brown and banded. A variety of Onyx that is reddish brown with white and lighter reddish bands is known as sardonyx.
 
Black never goes out of style, which is why you can never go wrong with black Onyx. Its appealing rich black colour can be both classic and contemporary. 
 
In fact, this dark and dreamy stone is beloved by goddesses and queens, and even Cleopatra was believed to keep the stone close as it was known for its potent protective powers. There is so much more to the eye when it comes to Onyx. Protective - yes, but this stone also serves us in other ways too. Like other black and beautiful stones, it can absorb negative energy and help us to keep our own wise counsel. The Chinese also believed that Onyx was a mega protector, making this banded gem a fave in Feng Shui practice. In ancient Indian tales, it was also the stone that would protect from evil and disharmony, helping to keep stability and balance, especially within the borders of relationships.