This is a drawing of some sort of object or jewel maybe. The number 20 is written right in the middle of it in a triangle, and there appear to be many many triangles all across the shape.
This Icosahedron icon is made in flat color style
. This format was developed by Icons8 designer team and became immensely popular for use in web and mobile applications. Feel free to download this icon in PNG format for free, or unlock other formats for $5. Unlike other icon packs that have merely hundreds of icons, this monster icon pack contains 6,200 icons, all in the same style and quality.