The creation of Wakasa agate crafts begins with a process called *kenseki* (stone inspection). This is not merely a task of selecting materials; it's a crucial stage, a silent dialogue with the stone that seals the fate of the final piece.
The artisan takes each raw agate stone in hand, carefully observing its color and the flow of its striped patterns. But it's not just the surface beauty that matters. By holding it up to the light or wetting it with water, they check for hidden internal cracks or unseen voids. If any flaws are present, the stone could easily fracture later when heat or pressure is applied.
Through this inspection, the unique personality and potential of each stone are revealed. For example, a high-quality, uniform stone with no internal flaws is set aside for ornamental pieces that will be transformed with intricate carvings of animals and other figures.
On the other hand, stones with distinctive striped patterns are designated for accessories, where the pattern itself becomes the star of the show. The artisan's years of experience and keen eye are the first key to unlocking the stone's hidden promise.
Based on the purpose determined during the *kenseki* inspection, the work on the raw stone finally begins. *Ogiri* (rough cutting) is the process of slicing the hard agate stone down to the approximate size of the final artwork.
Let's get a little technical. Mineral hardness is measured on the Mohs scale. While a steel knife has a hardness of about 5.5, agate clocks in at a very high hardness of 7.
Therefore, even with specialized cutting machines, this task demands immense time and effort. Unlike cutting soft wood, accurately and efficiently slicing through hard stone demands methodical, patient work. The block of stone carved out here becomes the blank canvas, ready to embark on a long journey to become a finished masterpiece.