Chakra: Throat, Third Eye
Onyx is a parallel banded variety of the oxide mineral chalcedony, a member of the quartz family.
This type of onyx is also called Mexican Onyx or Mexican Marble, and geologist refer to it as Banded Calcite.
Onyx forms from spring water or groundwater that has an abundance of calcite dissolved in it. When this water emerges at the mouth of a spring, the minerals precipitate out and build a crust of calcite crystals. Over time, more water flows by and more minerals settle out. The variations between the layers are caused by differences in the water flow rate and small amounts of impurities. In its most pure state calcite is white or clear, but it’s easily tinted by minor amounts of other minerals.
Onyx can also form inside caves or in other openings in bedrock. Veins of banded calcite can be found in fractured limestone, or even in volcanic rocks. Basically, beautiful formations of crystals can be created anywhere that mineral-laden groundwater flows.
The word onyx comes from the Greek word onux, meaning fingernail. The story is that one day frisky Cupid cut the divine fingernails of Venus with an arrowhead while she was sleeping. He left the clippings scattered on the sand and the fates turned them into stone so that no part of the heavenly body would ever perish.
Metaphysical & Spiritual Properties
Blue Onyx is a stone of mental power. It aids in healing the mental body by activating and clearing the third eye, removing any obstructions. This form of onyx helps to quiet the mind and find more stability and confidence. In times of stress and grief it will aid in emotional balance as well and give support and stamina. It helps with concentration and finding your inner voice, allowing you to become the master of your destiny and access higher inspiration.
Blue Onyx brings you into connection with your higher self and facilitates communication with guides and angels, thus enhancing your intuition. It is also believed to help psychic communication with animals.