Jabłko and other 65,000 icons from Icons8 icon pack follow the visual guidelines of the operating systems: Windows, iOS, Android KitKat, and Material. PNG format is free up to 100x100 px. Icons are availble for download in PNG and vector (SVG, PDF, EPS, and more).
The icon is a picture of an apple. The icon has a stem on the top with a leaf coming out of the right side of the stem. The apple would appear to be cut in half, as there are what appears to be two seeds in the middle of the icon.