Green onyx is an Asian natural stone, cloudy and transparent, green in colour. The stone is resistant, shiny and precisely because of its transparency it is ideal for backlit artefacts.
It has longitudinal streaks from white to green passing through yellow, ocher, white and dark vertical streaks. Being a natural material, each block is unique, with color concentrations, dark and light spots even within the same slab.
A careful eye can observe micro cracks and grouted, resin-coated or reconstructed veins given the fragility of this material.
In any case, these characteristics make every centimeter of green onyx exclusive.