Black Diamond apples from Tibet

Unless you are reading this article in a very remote part of Tibet, chances are you probably haven't seen a black apple. Black Diamond apples are a rare variety from the family of Hua Niu apples (also known as the Chinese Red Delicious). The name is a little misleading because they aren't exactly black, but rather a dark hue of purple.

The unique apples owe their color to their native geography in Nyingchi, a small city in the mountains of Tibet, where they receive a lot of ultraviolet light during the day but the temperature fluctuates dramatically at night, causing the skin to develop a deep, dark color. According to information, the pulp inside is white and bright like any other apple.