Due to the stone being natural, there would be discrepency in color. In this example , both are from the same collection but one is clear while the other is dark, but both from the original smokey quartz stone.
Smoky quartz is known for dispersing fear or negativity and removing depression. It can be used to provide emotional balance, remove anxiety or stress, and at the same time promote positive thoughts. For those who suffer from nightmares, it can remove them and replace them with manifestations in your dreams.