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...Latest grade a reasonable white where rhodium plating is optional an off gold colour required these grades are defined in terms of the yellowness index values and can also be described more conventional cielab co ordinates as concentric areas space to aid use definitions chart whiteness available from mjsa until now has been www mjsainc com this comprises metal foil based somewhat elastically within jewellery trade with no samples which allow comparison actual when agreed definition poor often hidden under viewed correct lighting conditions further task force initiative information or on world council website recently launched its org technology industry guidelines at expo ny th march single c w corti parameter astm called alloy must have value editor s note next issue bulletin will feature less article describing how were derived addition alloying additions affect perceived good that does not need...