The icon is made up of eight triangle shapes. The top five are all turned in different directions. The bottom three are made up of two obtus triangle at the left and right and the middle one looks like a isosceles. Together they all form a gem-shape.
This Jewel 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 5,700 icons, all in the same style and quality.