Pear Shaped Black Onyx Ring Set Black Onyx Engagement Ring Set Wedding Ring Set Black Gemstone Ring Onyx Vintage Ring Unique Proposal Ring What is Onyx? Onyx is a variety of chalcedony. It is a parallel banded silicate mineral and tends to be black with white banding in its most common form. However, varieties of Onyx can also be green, pink, brown, red and green and even clear with white banding. It is mostly made of calcite and has a waxy luster. The meaning of Onyx is protection and…