GJ206 is a review of valuation principles and approaches including a USPAP update and the current report writing standards for ASA and IRS “qualified appraisers”. Included in the course are: hands-on stone identification; qualitative analysis of gemstones and jewelry; a gemological update on diamonds and colored stones; country of origin characteristics; natural vs. synthetic gemstones; diamond and gemstone treatments; alternative gemological methods; metals and methods of jewelry manufacture; and characteristics of contemporary, period and collectible jewelry.