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The Colour of Gold and its Alloys.
The Colour Characteristics of Gold Alloys.
The Colour of Gold-Silver-Copper Alloys.
The Colour of Electroplated Golds.
A numerical grading system has been established forwhite gold alloys using the ASTM Yellowness IndexD1925, an existing colour quality standard. The Index iscalculated from the CIE (International Commi...