Idea of Coal Filled Icon
The icon is a very jagged rock. Three facets are visible, forming a jagged triangle, quadrilateral and a pentagonal facet. The outside is also very angular and possessing of six uneven sides. The icon represents coal, a dark substance harvested from the earth in order to use for power generation.
This is a Coal Filled 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 13,900 icons, all in the same style and quality.