Shanthari Exports Pvt. Ltd. Offers Copper colour Slate and Quartzite. Shanthari Exports Pvt. Ltd. Is an ISO 9001: 2008 registered company. Shanthari Exports Pvt. Ltd. Manufactures a range of sandstones, granites, limestone, slates and quartzite, patterns, mosaics, etc. The Copper colour Slate and Quartzite are available in Natural & Gauged; Honed & Gauged; and Ungauged finishes. The Slate and Quartzite is widely used in Residential & Commercial purposes.