About us

B. Tree Gems was organized by Mrs. Suvapriya Koonmas and her associate, Charles ( Chap) Riedel. The business is headquartered in Bantawai, Hang Dong, Chiang Mai Thailand where the company has a store that is open 7 days a week. The primary business is the cutting and selling of gemstones and the sale of jewelry, specimens and fossils.

Mrs. Koonmas is a graduated of Ramkhamhaeng University in Bangkok, Thailand. She has been engaged primarily in customer service in several industries. Mr. Charles is an experienced business executive and has functioned as a gem dealer during the past ten years. He attended Penn State University in the U.S. and the Asian Institute of Gemological Science. His experience includes over 35 years in the gem business including mining, gem cutting, manufacture of lapidary equipment and the manufacture and sale of gems and jewelry at both the retail and wholesale level.