WE HAVE WHITE AND BLACK SAND IN BULK IN INDIA WE HAVE TO PURMITION TO SELL OUTSIDE INDIA. WE ARE SUPPLING WOLDWIDE.SO CONATACT IF YOU REQURE CONATACT ME ON WHATSAPP MY WHATSAPP NUMBER IS 9537095096. THIS SAND IS FROM SEA BASE SAND ITS WHITE AND BLACK BOTH AVAILABLE. WE ALREADY TESTED IN LEBORETRY IT IS GOOD FOR CONTRUSTION ITS STRENTH IS WELL AND GOOD ITS COLOUR ALSO AND ITS SIZE IS PERFECT FOR BOTH CONCRITE AND PLASTER.