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The Hebrews obtained gemstones from the Middle East, India, and Egypt. [1] At the time of the Exodus, the Bible states that the Israelites took gemstones with them (Book of Exodus, iii, 22; xii, 35–36). When they were settled in the Land of Israel, they obtained gemstones from the merchant caravans travelling from Babylonia or Persia to Egypt ...
Chalcedony. Chalcedony (/ kælˈsÉ›dÉ™ni / kal-SED-É™-nee, or / ˈkælsəˌdoÊŠni / KAL-sÉ™-doh-nee) [2] is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite. [3] These are both silica minerals, but they differ in that quartz has a trigonal crystal structure, while moganite is monoclinic.
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 in brownish tones inter-layered with white and gray.
Onycha is a play on the word onyx which was a gem. The onyx most esteemed by the ancients was the black gem. [30] The Hebrew word for onyx was shoham and “Braun traces shoham to the Arabic sachma,'blackness:' 'Of such a color,' says he, 'are the Arabian [onyxes], which have a black ground-color.'
Opal 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. It is deposited at a relatively low temperature and may occur ...
The mineral aggregate heliotrope (from Ancient Greek á¼¥λιος (hḗlios) 'sun' and τρÎπειν (trépein) 'to turn'), also called Indian bloodstone or ematille, is a cryptocrystalline mixture of quartz that occurs mostly as jasper (opaque) or sometimes as chalcedony (translucent). The "classic" bloodstone is translucent to opaque green ...
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