The Gemmological Society of Japan

http://www.gakkai.ac/gsj/

 

Japan Re-Jewelry Council 

http://www.re-jewelry.net/

 

General Incorporated Association Japan Jewelry Association

http://www.jja.ne.jp/

 

Japan.Tax-free Shop

https://tax-freeshop.jnto.go.jp/eng/index.php

 

Japan Inheritance Diagnosis Association

http://souzokushindan.com/