Onyx is an amazing quartz stone that comes in a variety of colors that allow for beautiful interior decoration. Onyx is a great alternative to marble, and it has its pros and cons. More expensive than marble, onyx is a soft and fragile stone that tends to stain. It is also rare which makes it a fully decorative material which we would recommend in low traffic areas and on surfaces and for display purposes only as stone is otherwise very easy to maintain. With the nuances out of the way, onyx is a very beautiful stone with amazing patterns and being much lighter than marble it lets the light through and is translucent. So backlighting works wonders for onyx walls and countertops, giving you both a memorable sight and subdued ambient lighting.