Oligoclase is a rock-forming mineral belonging to the plagioclase feldspars. The Mohs hardness is 6-6.5 and the specific gravity is 2.64-2.66. In color it is usually white, with shades of grey, green, or red.
Silver is often coated on a base metal, such as copper, brass, white metal and nickel, to give it a silvery white, smooth and shiny finish. Silver plated jewelry often radiates purity and simplicity.