This Gem icon is a responsive icon. This means that it's optimized for four resolutions, from tiny 16x16 until highly detailed 80x80. The style comes from the latest Microsoft Office, which makes it perfect for any Windows applications, in particular, those with ribbon toolbar control. Unlike other icon packs that have merely hundreds of icons, this monster icon pack contains 15,000 icons, all in the same style and quality.
The icon had a octagon shape at the center of it and is surrounded by various triangle shapes both upside down and right side up. Under the triangles at the very bottom are to upside down right angle triangles. Together they all form a gem-like shape.