The Rose Quartz Cactus prefers bright, direct sunlight as often as possible. Due to their native environments, most cacti enjoy direct sunlight and will grow much better when exposed to it as often as possible. When grown indoors, place your Rose Quartz in one of the windowsills of your home. Make sure that there is no transparent fabric sitting between the window and the cactus, as this will lessen the intensity of the light that it absorbs.
While bright, indirect light is also effective for this succulent, this lighting condition will not allow it to reach its full potential. This also applies to the low light areas of your home, which should be avoided when possible. Cacti are not needy houseplants, but adequate lighting is crucial for their development.