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Opal Gemstone | Opal Stone – GIA
https://www.gia.edu/opal
WEBThis Month's. View the Gem Encyclopedia. Opal is the product of seasonal rains that drenched dry ground in regions such as Australia’s semi-desert “Outback.”. It is known for its unique display of flashing rainbow colors.
DA: 52 PA: 64 MOZ Rank: 61
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Opal Stone: Meanings, Properties and Uses - The Complete Guide
https://meanings.crystalsandjewelry.com/opal/
WEBApr 11, 2019 · Opal is a mineraloid or crystalline form of silica. It is colorless when pure. The Precious forms of Opal occur in a wide variety of colors, including white, yellow, red, orange, green, black, and blue. Raw stones have a …
DA: 64 PA: 13 MOZ Rank: 11
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Pictures of Opal - Black, Fire, Boulder, Blue and Pink - Geology.com
https://geology.com/gemstones/opal/
WEBWhat Is Opal? Opal is one of the world's most popular gemstones and the birthstone for the month of October. A nice precious opal can flash every color of the spectrum with an intensity and quality of color that surpasses the fire of diamond. The best opals command prices per carat that rival expensive diamonds, rubies, sapphires, and emeralds.
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Opal - Wikipedia
https://en.wikipedia.org/wiki/Opal
WEBOpal is a hydrated amorphous form of silica (SiO 2 · n H 2 O); its water content may range from 3% to 21% by weight, but is usually between 6% and 10%. Due to its amorphous property, it is classified as a mineraloid, unlike crystalline forms of silica, which are considered minerals.
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Opal Gems: Value, Price, and Jewelry Information - IGS
https://www.gemsociety.org/article/opal-jewelry-and-gemstone-information/
WEBOpal Stone Facts and Information. For thousands of years, people have mined and treasured opals. These striking stones are the traditional October birthstone and have inspired a rich body of folklore. (So rich, in fact, opal gems have been considered both the luckiest and unluckiest stones you can wear).
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Opal Description - GIA
https://www.gia.edu/opal-description
WEBDuring dry periods, much of the water evaporated, leaving solid deposits of silica in the cracks and between the layers of underground sedimentary rock. The silica deposits formed opal. How Opal Forms. Opal is known for its unique display of flashing rainbow colors called play-of-color. There are two broad classes of opal: precious and common.
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Opal | Properties, Types & Uses | Britannica
https://www.britannica.com/science/opal
WEBMar 8, 2024 · Opal, silica mineral extensively used as a gemstone, a submicrocrystalline variety of cristobalite. In ancient times opal was included among the noble gems and was ranked second only to emerald by the Romans. In the Middle Ages it was supposed to be lucky, but in modern times it has been regarded.
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Opal History and Lore - GIA
https://www.gia.edu/opal-history-lore
WEBEven today, opal invokes a feeling of magic and mystery. - Gift of Paula Crevoshay Writers have compared opals to volcanoes, galaxies, and fireworks. Admirers gave extraordinary opals poetic names like Pandora, Light of the World, and Empress. In ancient Rome, this gem symbolized love and hope. The ...
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What Is Opal - Gemstone Facts and Information - Gemporia
https://www.gemporia.com/en-gb/gemology-hub/article/1051/what-is-opal--gemstone-facts-and-information/
WEBOct 1, 2023 · What Is Opal - Gemstone Facts and Information. 1st October 2023 | 18 min read Share This Story: Is any gem prettier than Opal? With is scintillating play of colour and sheer range of hues, William Shakespeare's 'queen of gems' is one of the most beautiful stones ever discovered.
DA: 75 PA: 53 MOZ Rank: 78
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Opal Stone Meaning, Uses, Properties, Value, & More
https://www.gemrockauctions.com/learn/a-z-of-gemstones/opal
WEBAug 11, 2021 · Opal is a gemstone that forms in a variety of different colors, shapes, and sizes. Unlike most gemstones, opal isn't a mineral but a mineraloid. The composition is a hydrated (wet) amorphous silica with a Mohs hardness scale ranking between 5.0 to 6.5.
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