ENGINEERED QUARTZ is a composite material made of crushed stone bound together by a polymer resin. The common stone used in producing these products is quartz. Engineered quartz comes in many brands and does not require sealing although research reported in Consumer Reports (2010) magazine reveals virtually no difference in performance between quartz based products and sealed granite. Quartz countertops are nonporous, as strong as granite and marble, and consistent with color and pattern. Contact us for your quartz countertops Buffalo NY. You can select from our wide range of quartz stone colors.