Fluorite

One of the most notorious Huanggang finds of the past few decades are these "Blueberry Fluorites" which are a dark blue cubic Fluorite crystals with dodecahedral bevels, covering some amount of Quartz (known as Candle Quartz because of its waxy aesthetic). They range from looking like blueberries just perched on white, to coating the Quartz so completely you can't see it at all (which often looks swollen and juicey, like a blueberry!). The variety of these often compels collectors to have multiple examples.