Yellow Calcite assists in bringing about a unique combination of mental clarity, focused energy, and grounding necessary to successfully complete complex tasks or projects. It is one of the most effective crystals for situations requiring full attention and persistence over the long-term, helping one quickly overcome any feelings of fatigue. Associated with the solar plexus chakra, Yellow Calcite improves willpower and decisiveness, allowing one to have confidence in their actions. The energy of Yellow Calcite alleviates depression and promotes an optimistic outlook.
 
Black Moss Opal particularly is thought to aid in achievement of personal goals, abundance, and prosperity. Black Moss Opal is also said to promote connection to the environment as well as to support physical and emotional growth