Welcome to Onyx Creations USA a Subsidiary of ADP Granite & Marble Inc. We create onyx sculptures and we sell onyx in a raw material as boulders. We are a onyx stone store located in the city of San Marcos, California in the county of San Diego. The natural stone Onyx is classified as a gemstone for being a highly translucent materials which contributes to mental relaxation and emotional state. Onyx has different patterns that makes onyx a unique stone. Since the formation of the world, natural stone to be form had to wait millions of years, which now we can enjoy unique and wonderful pieces of incomparable value. Dare to have a piece of millions of years in your personal space