Jewelry metal finishes
For platinum, gold, and silver jewellery, there are many techniques to create finishes. The most common are high-polish, satin/matte, brushed, and hammered. High-polished jewellery is the most common and gives the metal a highly reflective, shiny look. Satin, or matte finish reduces the shine and reflection of the jewellery, and this is commonly used to accentuate gemstones such as diamonds. Brushed finishes give the jewellery a textured look and are created by brushing a material (similar to sandpaper) against the metal, leaving "brush strokes." Hammered finishes are typically created by using a rounded steel hammer and hammering the jewellery to give it a wavy texture.
Some jewellery is plated to give it a shiny, reflective look or to achieve a desired colour. Sterling silver jewellery may be plated with a thin layer of 0.999 fine silver (a process known as flashing) or may be plated with rhodium or gold. Base metal costume jewellery may also be plated with silver, gold, or rhodium for a more attractive finish.