• American Slate Company

• Arnold Stone

• Avid India Marbles & Granites

• Bayer Stone, Inc.

• Buechel Stone Corp.

• Delaware Quarries, Inc.

• Echeguren Slate, Inc.

• Exotic Granite & Marble, Inc

• Fletcher Granite Company, Inc.

• Greenstone Slate Company

• Haoxingda Stone (Xiamen) Co., Ltd.

• Impression

• Marmi di Carrara srl

• North Country Slate

• Polycor Inc.

• Rock of Ages Corporation

• Sati Granites Pvt Ltd.

• Structural Slate Company

• Sunset Stone

• Vermont Structural Slate Company, Inc.

• Veronafiere / Marmomac