Flint, also known as gravel in traditional Chinese, is a raw material mainly used to make arrows and flint. It is obtained by mining gravel. Gravel has a 10% chance to drop flint instead of the gravel itself. It is possible to brush flint by digging down on a pile of gravel. At the same time, this procedure is irreversible, which means that flint cannot be reduced to gravel.
When gravel is mined, there is a 10% chance of dropping 1 flint instead of gravel. When mining with Fortune-enchanted tools, the chance of dropping flint is increased to 14% for Fortune I, 25% for Fortune II, and 100% for Fortune III. Mining gravel with a Silk Touch enchanted tool will not drop flint.