People often describe a moonstone as a drop of water glowing underneath the moonlight. Opal is the official birthstone for October, while moonstone is one of three birthstones for June (pearl and alexandrite are the other two). [2] X Trustworthy Source Gemological Institute of America Nonprofit institute responsible for gemological research and education and setting gemstone buying and selling standards Go to source
The chemical formula of moonstone is KAl3O8, while the chemical formula of opal is SiO2. nH2O. [5] X Research source
Opal is the official national gemstone of Australia.
Opal coloring is determined by the arrangement of silica spheres in the gemstone. [10] X Research source Inclusions, or materials trapped during gem formation, give moonstones their milky, white finish. [11] X Research source
Opals have a phenomenon known as play of color (opalescence): light reflects off the silica spheres inside the gem, giving opals fiery flashes of color. [13] X Research source
Moonstone can withstand harsh light, but it’s highly prone to breakage: most manufacturers set moonstones into pendants or earrings because they’re less prone to damage (vs rings). [16] X Trustworthy Source Gemological Institute of America Nonprofit institute responsible for gemological research and education and setting gemstone buying and selling standards Go to source
Moonstones were associated with lunar deities in the Greek and Roman Empires. During full moons, the ancient Romans believed they could see into the future if they held a moonstone in their mouth. [19] X Research source
Moonstone is a wonderful option for individuals who are more sensitive or stressed than others. It’s known to be grounding during emotional times, and it can help you maintain positivity in the presence of negative people. [21] X Research source
Black opals are considered the most rare and valuable type of opal, with some selling up to $10,000 per carat. [24] X Research source
Select a stone that is uniform and rounded: flat moonstones don’t display sheen well and are less valuable. If you’re looking for a meaningful gift, surprise your loved one with a moonstone pendant or earrings.
You can’t go wrong with an opal ring or necklace, but keep in mind that opals turn fuzzy overtime. If you buy an opal ring, you must re-facet it in a few years or replace it entirely. [27] X Research source It’s important to treat your opal jewelry with care so you can extend its wear-time. To clean opal rings, wet a cloth with warm, soapy water and gently wipe the stone.
