Petra Stone Gallery formally know as Marblex Design International is Washington, DC metro region's first Marble Institute of America (MIA) Accredited Natural Stone Fabricator. Since 1987 we have been repeatedly recognized for our award winning custom stone design projects. We use highly skilled craftsmen specializing in custom stonework for kitchens, bathrooms, fireplaces, slab showers, floors, architectural elements as well as custom furniture for residential and commercial use. Since the start we have been providing our clients with innovation, quality and a customer-centric approach. Our knowledgeable staff of craftsmen, designers and architects provides an unequaled creative and professional approach in the field.