Company info

LEADSTONE USA INC®, is a quartz manufacturing company, that sells to distributors and fabricators. Our warehouses are located in Long Island City, New York, and Monroe, New Jersey.

Our main product are quartz slabs, we have the largest standard size slabs in the industry at 126” x 64”. Our material is composed of 93% natural quartz and 7% resin which makes it the hardest and most durable stone on the market today. 

In order to provide quartz products with  the best quality and service, Leadstone offers a wide selection of products that are innovative, affordable, and accessible from a single supplier. Stain, heat and scratch resistant, Leadstone surfaces allow you to design the perfect interior environment whether it’s a kitchen counter or a bathroom vanity top.