Finer grades of whetstones intended for use with oil (though, again, water may also be used) are called oilstones. Oilstones usually come in the form of bench stones. One of the natural minerals commonly used in oilstones is Novaculite. Examples of stones made from this material include Arkansas, Ouachita or Washita stones from the Ouachita Mountains in Arkansas. These come in various grades and colors, with the finer stones being denominated "surgical black" or "pink translucent". Novaculite is from the Devonian and Mississippian periods. It is a sedimentary rock composed mostly of microcrystalline quartz and is basically a recrystallized variety of chert. It is also the primary material in Charnley Forest and Turkey oilstones.
More informationProduct No: 4427
Period: Modern times / Knives
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