Old natural used turkey hard sharpening oil stone original squero venice extra big old natural used turkey cretan hard sharpening oil stone restoredsize: approx. 100X100mm, irregular thickness.weight: approximately 1500 grams included the wooden base.cleaned but stone not removed. Personally collected in venice from the equipment of an old now decommissioned squero. It has a beautiful history. They arrived loaded with stones from the greek islands and this one has probably been in use for over a century. Large wooden base, but thats how they do it here. For more photos or questions just ask. All the photos of the restoration are available upon request.