The best loved onyx- the black onyx is offered at semiprecious.com in many different facets. We are happy to present to you our collection of black onyx jewelry (jewellery), beads, and healing stones in a variety of shapes, sizes and designs, Black onyx is one of the most impressive varieties of onyx. The gleaming black gemstone looks elegant in any kind of jewelry, silver or beaded. Black Onyx is the anniversary gemstone for the 10th year of marriage. It is also a symbol of eloquence. Black onyx gemstones eliminate negative thinking and believed to sharpen the wits of the wearer. Onyx is said to bring spiritual inspiration and be of great assistance in holding emotions and passions under control.