onyx wikipedia - EAS
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Onyx primarily refers to the parallel banded variety of chalcedony, a silicate mineral. Agate and onyx are both varieties of layered chalcedony that differ only in the form of the bands: agate has curved bands and onyx has parallel bands. The colors of its bands range from black to almost every color. … See more
Onyx comes through Latin (of the same spelling), from the Ancient Greek ὄνυξ, meaning "claw" or "fingernail". Onyx with flesh-colored and white bands can sometimes resemble a fingernail. The English word "nail" is See more
It has a long history of use for hardstone carving and jewelry, where it is usually cut as a cabochon or into beads. It has also been used for intaglio and hardstone cameo engraved gems, where the bands make the image contrast with the ground. Some onyx is natural but … See more
• Rudler, Frederick William (1911). "Onyx" . Encyclopædia Britannica. Vol. 20 (11th ed.). p. 118. See more
Onyx is formed of bands of chalcedony in alternating colors. It is cryptocrystalline, consisting of fine intergrowths of the silica minerals See more
Onyx is a gemstone found in various regions of the world including Greece, Yemen, Uruguay, Argentina, Australia, Brazil, Canada, … See more
• Jasper – Chalcedony variety colored by iron oxide
• List of minerals – List of minerals for which there are articles on Wikipedia
• Birthstone – Gemstones representing a person's birth month See moreWikipedia text under CC-BY-SA license - People also ask
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