natural stone mailbox material: bluestone competitive prices professional processing many years of exporting to Europe Blue limestone mailbox for home use1) Material: blue limestone from our own quarry2)Price: lower prices in same quality3)Packing: wooden boxes4) Finished: honed, polished, tumbled, antique, chiselled, sandblast, flamed, bushhammered, natural split, machine cut only, rough-rubbing ...