The Color Blue
Blue brings to mind the spiritual qualities of vast blue skies and seas. Blue is linked to water and thereby to fertility and life — not as a color of force or passion but rather life as seen in the big picture.
Its link to sky and water suggests space, immensity, infinity, eternity, endlessness, heaven.
Christ and the Virgin Mary are often depicted wearing a blue cloak, and many ancient gods and goddesses from different cultures wear blue or have blue skin.
Indigo blue is the color for the 6th Chakra (Third Eye, intuition, integrity, wisdom) while sky blue belongs to the 5th Chakra (throat, communication, self-expression). In Buddhism blue is the color of a sacred light, while In western lore a blue light is associated with ghosts or is called a witch light.
Always Blue: Aquamarine, Benitoite, Blue Agate, Blue Chalcedony, Turquoise*, Lapis Lazuli**, Sodalite*
Sometimes Blue: Agates*, Apatite and Cat’s Eye Apatite*, Amazonite,* Aventurine*, Azurite, Diamond, Dumortierite*, Fluorite, Iolite, Kyanite,* Larimar*, Moonstone, Opal*, Sodalite*, Spinel, Sapphire and Star Sapphire, Smithsonite, Spectrolite*, Topaz and Zircon.
Paua, the mother-of-pearl of abalone, often appears to be predominantly blue. Freshwater Pearls and a number of stones are dyed or heated to appear blue, or more vividly blue.
Note: dark blue stones sometimes come very close to deep violet.
* May be streaked or variegated
** May have pyrite inclusions