CHAMPAGNE DIAMOND CERTIFICATES   The Champagne diamond certificate records all the relevant information pertaining to the diamond including carat weight, colour grade, clarity grade, measurements and physical properties as well as plotting diagrams. Clarity grading: The accepted nomenclature and grading standards accepted worldwide. Colour grading: The Rio Tinto developed colour grading system is applied and grades the depth of colour from C1-C7.   LATEST NEWS   Surface treated tanzanite found In March, FGA member Ian Campbell positively identified a faceted tanzanite as being treated by an unknown method. Other previously seen surface treatments took the form of simple acetone-soluble blue dye(s).... Read More OUR OFFICES