The icon is the shape of a full circle. The inside of the full circle is covered with a large amount of dots that cover the entire shape. Each dot is spaced evenly through out the circle.
This is a New Moon icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,300 icons, all in the same style and quality.