Isabelle Chan
Helped me a lot in identifying B+C Jadeite (chemically bleached and colored jadeite) that was imitated well and bad for health. Learned a lot from Gary, and that nowadays scams are getting better and better. The scammers actually issued certificate that certified the item is a jadeite but state nothing about whether the item is a type a jadeite (natural jadeite without undergoing through treatment)