River White by International Stones

River White is an engineered quartz surface: crushed natural quartz bound with polymer resin and pigments. It is a manufactured material, not a natural stone. International Stones describes IQ as composite quartz, a resin bound mixture of natural quartz mineral with glass or metallic flecks and pigments. It does not publish a quartz percentage, and its product pages give a country of origin (Asia, India or Spain) for each colour.

Our listing shows River White in a polished finish and 20 mm and 30 mm thicknesses. Your quotation states the finish and thickness we have priced.

For everyday cleaning use a soft cloth with warm water and a little mild washing-up liquid, and wipe up spills promptly. Use a chopping board rather than cutting on the surface, a trivet or heat mat under hot pans, and avoid bleach, abrasive pads and harsh cleaners.

International Stones care guidance · Quartz cleaning guide

River White costs £450–£700 per m², supplied, fabricated and installed. Your quotation is itemised and depends on your worktop and location.

How our prices work · Price calculator

International Stones gives a manufacturer's 15 year warranty on its IQ quartz, with registration required. Its terms are in a separate document. Stoneone's 2-year workmanship guarantee is separate, and we confirm the warranty that applies to your order in writing.

International Stones warranty terms · Stoneone warranties

No. Another surface on our site shares this name but comes from a different brand, so the look, finish, thicknesses and price can differ. This one is International Stones (polished finish, 20 mm and 30 mm, £450–£700 per m²). The others: iStone (polished finish, 20 mm and 30 mm, £375–£550 per m²). Check the brand on the product page you are looking at.

River White by iStone