Chipped Bluestone . But as news of their significance continues to spread, more and more pieces of preseli bluestone are being illegally removed from sites which are part of the mynydd preseli site of special scientific interest (sssi) and preseli special area of. Further, it's readily available and it comes from united states' quarries, so there is no overseas shipping to add to its cost, which is. Bluestone chip garden path Front yard landscaping, Garden paths, Yard from www.pinterest.com It has an overall blueish coloring, which is why they call it bluestone, however there can be veins of greys and browns running throughout it. Its rough surface also means that it rarely gets slick or slippery. A year later and i am still getting these chips and flakes.