You pineal gland, which is located in the center of your brain, has a strong association with your third eye (sixth chakra). It is responsible for the production of melatonin, a hormone necessary for restful sleep and achieving the brainwave states associated with deep meditation, mystical experience, connection to higher realms, and psychic visions.
Many meditation techniques focus on pineal gland activation, which can help trigger and optimize the neurochemicals necessary for deep spiritual insight. But did you know that the pineal gland also contains microscopic calcite crystals? Calcite (CaCO3) is a hexagonal lattice system crystal that demonstrates the piezoelectric effect. In other words, when calcite crystals are subjected to mechanical stress, they generate a electrical charge or release of light. There is also some suggestion that the presence of calcite crystals in the pineal gland may turn it into a type of receiver that tunes in to different frequencies in a manner similar to a radio receiver (crystal radios use mineral crystals such as galena). This may offer the beginnings of a scientific explanation that ties the pineal gland to receiving messages from spirit.
In crystal healing, calcite is used to generate positive vibrations and increase vibrational frequency. Hexagonal crystals also aid in manifestation and increased awareness.
So what does it mean that you have calcite crystals in your brain? These crystals can release electrical charges to stimulate your pineal gland from within, helping with cycles of sleeping and waking and allowing you to achieve meaningful dreams and deeper connection with spirit. Activating them may also strengthen the function of your third eye as a receiver, allowing clearer communication with higher realms. With your focus on the pineal gland during meditation, you can activate these crystals from within, raising your vibrational energy. You can also use calcite crystals during meditation, holding them in your hand or placing them nearby, to create resonance with your pineal gland.
It's no coincidence that calcite often occurs naturally in amethyst. Amethyst is another piezoelectric crystal (it's a quartz variant) that is known to stimulate better sleep and dreams and to help you connect with higher realms and mystical experience. Keeping a piece of calcite in amethyst on a bedside table or in a meditation room can help you connect with the spirit realm in meditative, dream, and sleep states.