Opal

Opal is an often colorful semi-opaque silicate mineraloid found in the Earth's crust. Opal is not a mineral or "rock" because it is amorphous, meaning it has no crystalline structure. Precious Opal is a valuable and widely loved gemstone for its beautiful and flashy displays of color. The origins of the word Opal are unknown, however, it most likely originates from the Sanskrit word Upala (उपल) meaning "jewel" evolving eventually to the Greek word opállios (ὀπάλλιος), meaning 'to see a change in color.

Opal forms when water runs through silica-rich soil and minerals, and into cracks in the Earth's surface. The silica-infused water settles into the cracks in the crust of the Earth and evaporates, leaving silica behind. This process happens seasonally, building layers of silica up over time. It takes roughly 5-6 million years for a 1cm Opal to form. Precious Opals form when the balls of silica settle in a perfect formation, acting essentially as a prism, refracting vibrant colors. Opal is a 5 on the Moh's scale so it is pretty fragile. It is possible to create synthetic Opal in a lab by lining up the tiny balls of silica in that perfect formation, these synthetic Opals are beautiful and found often in jewelry. 

Opal has historical significance in many cultures. Pliny the Elder wrote of Opal "Some opali carry such a play within them that they equal the deepest and richest colors of painters. Others…simulate the flaming fire of burning sulphur and even the bright blaze of burning oil." Opal also has significance in Arabic, Greek, and Roman culture. Arabic legend says Opal falls from the sky as lightning. 

Opal has extensive metaphysical properties. It has a high vibration and is supposed to be a very lucky stone. It can display any color making it an excellent choice for any metaphysical need. It's supportive in honest introspection, helping you see your faults without the crushing anxiety that comes with self-awareness. When worn as jewelry, Opal is ideal for maintaining positivity and optimism. Opal can also symbolize purity. Opal is traditionally the 14th wedding anniversary gift.