Colours and markings vary between crystals. You are purchasing the Smokey Quartz crystal egg, pictured (has rainbows) (approx 68g).
About Smokey Quartz Crystal Egg
In Ancient times Smokey Quartz crystal was a power stone to the Druids. In modern times it is known as a ‘go to’ grounding and anchoring crystal as it has a very strong connection to the earth.
It is believed that Smokey Quartz can help you overcome depression and stress. This crystal can also help with nightmares. You can also use Smokey Quartz to let go of the past.
Smokey Quartz is a slow and steady crystal however it is still very powerful.