Ruapehu stone is a natural formed pebble from years of tumbling in the Whanganui River. King Country Quarries wash and grade the stone in to several grading sizes.
- 4-6mm Ruapehu stone. A gray pebble ranging from 4-6mm in size
- 6-10mm Ruapehu stone. A gray pebble ranging from 6-10mm in size
- 10-20mm Ruapehu stone. A gray pebble ranging from 10-20mm in size
- 20-25mm Ruapehu stone. A gray pebble ranging from 20-25mm in size
- 25-65mm Ruapehu stone. A gray pebble as the name suggests 25-65mm in size.
- 65-200mm Ruapehu stone unwashed. A gray stone ranging from palm to 200mm in size.
- 200-400mm Ruapehu stone unwashed. Gray in colour now getting to the small boulder sizes.
- 20+ Drainage
- River Run
- River boulders. Small to large in gray hard rock to white soft rock that can be carved of polished.