... 3.Straight, Spiral, Arc 4.Have owner mines and factory Stone StaircaseFeature:1. Marterial: Natural Granite or Marble.2. Process: ... , Seawave Green, Butterfly Blue, Butterfly Green...etc., kinds of granite from India, China, Brazil....5. Styles: Both piral stair & straight flight ... let us know immediately if you are interested in our stone stairs and staircases.We can also work according to your ...