Belgian yellow coticule stones seem expensive - until you think that you will, in all probability, never need to buy another. They are extremely hard-wearing and, with a little care, should literally last a lifetime when used properly. When viewed in this context, I think you will agree that they not only represent great value for money, but are a great investment! All hones come in their own fitted box. These stones work in the same way as the Belgian Blue stones. Specific slurry stones are available to help create a slurry and so speed up the process.