(PD950 is the specification of palladium jewelry. The international seal of palladium jewelry is "Pd" or "Palladium", which is expressed in thousands of purity characters. For example, Pd990 indicates that the purity is 990. )
The specifications of palladium ornaments are Pd999, Pd990, Pd950 and Pd900.
(The specifications of palladium ornaments are Pd999, Pd990, Pd950 and Pd900. )
Extended data palladium, platinum group member, element symbol Pd, similar in appearance to platinum, with silver metallic luster and bright color. The specific gravity is 12, which is lighter than platinum and has strong ductility. Melting point 1555℃, hardness 4-4.5, slightly harder than platinum. Chemical properties are relatively stable, insoluble in organic acids, cold sulfuric acid or hydrochloric acid, soluble in nitric acid and aqua regia, and it is not easy to oxidize and lose luster under normal circumstances.
References:
Baidu encyclopedia palladium