SSQ Riverstone Phyllite is one of very few top quality phyllite slates available worldwide. Owned and sourced exclusively by SSQ, the Riverstone quarry is located in La Represa, deep in Central Argentina, situated between the Pampas and the Andes mountain range.

It is medium grey in colour and has a rougher surface texture imparting a more rustic feel to a new or refurbished roof. Harder, denser and stronger than traditional slate, Riverstone is a leading alternative to both second hand and new indigenous slates, because of its technical credentials and acceptance for use by the various Heritage Agencies and National Park Authorities.