Approximately 2.5"
 
Syenite with Fluorescent Sodalite are often sold under a trade marked name yooperlite.
 
Yooperlite is the name Gen enthusiast Erik Rintamaki came up with, it is actually Syenite rocks that are rich in fluorescent Sodalite. The discovery was published in Mineral News in 2018.
 
It is a beautiful stone which looks absolutely amazing under a UV light. (As you can see by the photos)
 
It is a recently new addition to the crystal world and an excellent stone for assisting meditation as it can help in clearing your mind of any unnecessary thoughts and help to find inner peace.
 
A stone of truth it aids in releasing unwanted negative thoughts helping to increase your resolve to beat any fears or phobias.
 
It is also said to help to increase your self confidence, allowing you to accept yourself as you are.