This Crown 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 5,500 icons, all in the same style and quality.
Idea of Crown Icon by Andrew Webb
We've received the idea on September 04, 2013 and created the icons on September 11, 2013
Either a regular crown by itself similar to this one , or perhaps a user wearing a crown. These could be used to show a import-level user.