polymeric sand or stone dust? | flagstone joints | how-to
May 09, 2013 · Polymeric sand is usually available in grey, dark grey, and yellow-grey. Stone dust is usually available in whatever colors if road base type gravel are quarried in your area. Here you can buy grey gravel, red gravel and cream colored gravel….stone dust is available in those very same colors, because stone dust is gravel–just smaller.