10 Things to Know About Suita


1 -  Suita are specific to three stratum; Tenjyou, Hon or Shiro. Stones taken from other Strata, with or without Su, are not Suita.


2 - The moniker Suita translates to 'nest', they're named as such because most have Su; little holes, pockets or cavities that resemble resemble a nest or a hive. They were created by escaping gases when the stone was being formed in the Earth's crust.   


3- While the majority of Suita will exhibit the eponymous Su, some do not; these are called 'Sunashi'; meaning "without Su".


4 - The presence of Su does not guarantee that a stone is a Suita. Su can be also found in other layers.


5 - Suita are not Awasedo, they are not considered to be 'finishing stones' in the broadly accepted use of that term. While some can be used to finish a straight razor's edge, that does not classify them as 'Awase-To'.


6 - Suita can have a rather broad range of qualities; some are very hard while others are very soft, there are faster and slower stones also. Some may be a very homogenous pure white color, while others will have wild patterns, stripes and Suji.  


7 - Occasionally, some examples of Suita will have Su with very hard sandy inclusions inside of them. Other times, there can be very coarse particles in some of the Suji also.  Additionally, the broad washes of color known as Yake can also be very hard and scratchy. However - the presence of Su, Suji and Yake does not infer the presence of issues. 


8 - Some quarries that were not famously known for producing high-quality Awasedo, might be very well known for producing quality Suita. Hideriyama and Yaginoshima are two such mines.


9 - Mikawa Shiro Nagura can be used successfully on harder Suita. The abrasive particles mix and work together to form an abrasive mud that is unique. 

10 - Many people consider Suita with a lot of Renge to be higher quality stones. However,  Renge is not a performance indicator. Like other patterns that are almost always associated with Suita exclusively, such as Momiji, it is purely a visual consideration. 


© Keith V Johnson 2014 - 2018