BASALT GREY. The beautiful look of natural Basalt Bluestone found in an external environment truly makes way for being at one with the tranquility of outdoors. Embrace the organic, earthy, elegant, fun, sophisticated and understated feel. True opulence. The very workable size of 600x600 in 20mm thickness which make your outdoor, alfresco, pool area the place to be. Your Oasis !!