Accompanied by an AGL (American Gemological Laboratories) report stating that the natural ruby has no indications of heat treatment and originates from Kenya. Report number 8086172, dated 13 March 2017.
Accompanied by a Gubelin report stating that the ruby has no indications of heat treatment and originates from East Africa. Report number 0910175, dated 26 October 2009.
Bonhams. RARE JEWELS & JADEITE, 31 May 2017, 15:00 HKT, HONG KONG, ADMIRALTY