Indonesian Natural Stones

These natural stones are quarried from volcanic tuff in West Java, Indonesia. Tuff is formed from silica rich volcanic ash that is fused into a solid stone in pyroclastic flows; essentially a mudslide of extremely hot volcanic gas and fine pulverized stone. If you have used Japanese Amakusa or Natsuya stones, these are the same type of stone but are a little harder and often finer.

They have a very homogenous grit structure and even hardness throughout the stone which makes for both an even scratch pattern and even wear during use and they go out of true very slowly.  For natural stone users, these can be integrated into an all natural progression as they fill in for some commonly used synthetic grits, used in-between medium and fine stones or can be used on their own to make finer medium grit edges or toothy low-fine edges. 

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Indonesian Natural Stone Black Medium/Fine Grit

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Indonesian Natural Stone Red Medium Grit

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Indonesian Natural Stone White Fine Grit

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de $23.52
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