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Many gems are crystals which are classified by their crystal system such as cubic or trigonal or monoclinic. Another term used is habit, the form the gem is usually found in. [12] For example, diamonds, which have a cubic crystal system, are often found as octahedrons. [13] Gemstones are classified into different groups, species, and varieties.
Signet ring with engraved bezel Ring with an engraved gem in a bezel setting. A bezel is a wider and usually thicker section of the hoop of a ring, which may contain a gem or a flat surface (usually with an engraved design, as in a signet ring). [1] Rings are normally worn to display bezels on the upper or outer side of the finger.
Collins Gem Dictionary of Biography (1971) Collins GEM is a collection of miniature books and dictionaries by HarperCollins.The original Collins firm published its first dictionary in the year 1824, and its first series of Collins Illustrated Dictionaries in 1840, including the Sixpenny Pocket Pronouncing Dictionary, which sold approximately 1 million copies.
A small letter or other symbol inscribed on a coin, indicating at which mint the coin was struck. Examples are "S" for San Francisco on U.S. coins, or "A" for Paris on French coins. mint roll Newly minted coins wrapped in rolls of a certain quantity, by the mint or issuing authority. mint set A set of uncirculated coins packaged and sold by a ...
Gem, a format of the RubyGems package manager for Ruby; Gem, codename for the PlayStation Move controller; Gem, the game engine of Best Way; GEM of Egypt, a power shovel used for strip mining; Geminal, in chemistry; Gemini (constellation), in astronomy; Gas electron multiplier, a type of gaseous ionization detector
The word "emerald" is derived (via Old French: esmeraude and Middle English: emeraude), from Vulgar Latin: esmaralda/esmaraldus, a variant of Latin smaragdus, which was via Ancient Greek: σμάραγδος (smáragdos; "green gem"). The Greek word may have a Semitic, Sanskrit or Persian origin.
In 1979 an abridged 2 volume pocket sized (8 by 12 cm, 3.25 by 4.75 in) edition was published as Collins Gem Encyclopedia. It was distributed in the United States by Simon and Schuster. A revised edition was published in 1980. the set had 1,125 pages, 450,000 words, and 14,000 articles.
The Historical Thesaurus of English (HTE) is a complete database of all the words in the Oxford English Dictionary and other dictionaries (including Old English), arranged by semantic field and date. In this way, the HTE arranges the whole vocabulary of English, from the earliest written records in Old English to the present, alongside dates of ...