00000cab a22000003a 4500 UP-99796217610898851 Buklod 20231008001140.0 a grb 001 u| ta 130805s xx d | ||r ||||| || DENG eng Clemente, Eligia Dela Paz A Familiarization with gold and the jewelry metals. pp. 1-6 Traditionally, gold has been known for its use as a jewelry metal and has placed second to copper in importance as ornament only because of its cost abs relative rarity. Aside from these two metals, however, platinum, silver, and nickel have also familiarize the reader with the different properties of each of the metal mentioned as well as alloys of gold commonly used in making jewelry. A short description of how gold is refined as well as the common analytical techniques for determining the amount of gold in jewelry is also included. To assist in identifying the authenticity of a piece of jewelry and give ab estimate of its purity in karats, a short description of the touchstone method is also included in this paper. Gold. Jewelry. Platinum. Silver. Copper. Nickel. UPCOE NEC Technical Bulletin 1, 2 (September 2004). FI UPD DENG-II Article