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Agate. Agate is a fibrous, banded variety of chalcedony that occurs in a variety of colors and patterns. [9] Iris agate shows exceptional iridescence when light (especially pinpointed light) is shone through the stone. Landscape agate is chalcedony with a number of different mineral impurities making the stone resemble landscapes. [10]
These agates are typically less colorful, with banded lines of grey and white chalcedony. [19] Greek agate is a name given to pale white to tan colored agate found in the former Greek colony of Sicily as early as 400 BCE. The Greeks used it for making jewelry and beads. Brazilian agate is found as sizable geodes of layered nodules. These occur ...
A geode of chalcedony richly colored by hematite that gives it its rusty hues and marks it as Akik [contradictory] Aqeeq, akik or aqiq (Arabic: العقيق) means quartz in Arabic, and agate in Turkish, however in the context of rings usually refers to a ring set with a chalcedony stone. Well-known types of chalcedony are carnelian, agate, and ...
Individual layers consist of translucent or opaque, microcrystalline, fibrous quartz called chalcedony. Impurities in different layers cause variations in color. Many agate masses are simply geodes that have completely filled up with quartz. Common agate colors are clearish-whitish-grayish, brownish-red, and yellowish-brown.
A rough specimen of bloodstone. Heliotropes (from Ancient Greek ἥλιος (hḗlios) 'sun' and τρέπειν (trépein) 'to turn') (also called ematille, Indian bloodstones, or simply bloodstones) are aggregate minerals, and cryptocrystalline mixture of quartz that occurs mostly as jasper or sometimes as chalcedony (translucent).
Some are carnelians or black agate with thin white etching patterns resembling the back of a turtle, which is an ancient pattern that dates back to the era of the Harappan Indus culture. Ancient Roman agate beads as well as etched Bactrian, Middle Eastern, Chinese, Afghan, Yemeni, [6] and Indian agate and carnelian beads made their way into ...
Timothée Chalamet is sharing that his physical transformation into Bob Dylan for the biopic A Complete Unknown went deeper than changing his hair and wardrobe.. During a Jan. 20 appearance on NPR ...
Fire agate is a variety of chalcedony that displays fire-like iridescent flashes. It is found only in certain areas of central and northern Mexico and the southwestern United States (New Mexico, Arizona and California). [3] Despite its name, it is not a true agate, since it typically does not have bands. [4]