Canadian Jewellers Block Insurance Services Inc. (CJB)
Our name says it all. We are Canadian Jewellers Block Insurance Services Inc., but that is rather a mouthful, so we have become known as “CJB”.
http://www.jewellersblock.com/

Jewelers Mutual Insurance Company
Founded 100 years ago by jewelers forming a mutual company, Jewelers Mutual is the only company in the U.S. and Canada specializing exclusively in insuring jewelry and the jewelry industry.
http://www.jewelersmutual.com/