Handmade Quartz is also known as Handmade ONYX. It is an enhanced version of ONYX marble stone and is prepared by mixing two or more ONYX stones for giving them a unique shape and design. This is done by compressing two or more quartz with high-quality chemicals. The chemicals used in this entire process are eco-friendly which makes it a best-to-buy marble stone for flooring and wall cladding.