Green quartz slabs or kitchen countertops are man-made products made primarily from natural materials. Engineered quartz is not to be confused with quartzite, another attractive natural stone used as a countertop. composed of 94% ground quartz and 6–10% resins and pigments to form a durable, non-porous slab. The strength of quartz, even in its manufactured form, makes it naturally resistant to abrasion, scratches, dents, and even acids without the need for sealers. Also, the environmental impact of manufactured quartz is low. Quartz is an abundant material, and the final product is non-toxic and non-allergenic, has a long life, and reduces the need for replacement.