Its gold bars stacked on each other. they are in trapezoid shape and are stacked in a pyramid shape. They have gaps in between each of the bars creating little upside down triangles.
This Gold Bars icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,000 icons, all in the same style and quality.