Its appearance (color, gloss) and the platinum are very similar, non-soluble organic acid, cold sulfuric acid or hydrochloric acid, but soluble in nitric acid and aqua regia.

• 其外观（颜色、光泽）与铂极为相似，不溶于有机酸，冷硫酸或盐酸，但溶于硝酸和王水。