| 单词 | gemstone |
| 释义 | gemstone (once / 54720 pages) n WORD FAMILY gemstone: gemstones USAGE EXAMPLESSome Chinese investors call ivory “white gold,” while carvers and collectors call it the “organic gemstone.” New York Times(Dec 30, 2016) Meanwhile, an early National Geographic assignment on gemstones turned into a lifelong obsession. Time(Dec 30, 2016) They were able to confirm that the composition of these matched that of micrometeorites, which tend to be rich in olivine, a greenish semi-precious gemstone. Economist(Dec 10, 2016) n a crystalline rock that can be cut and polished for jewelry Syn|Hypo|Hyper gem, stone cabochon a highly polished gem that is cut convexly but without facets opaque gema gemstone that is opaque transparent gema gemstone having the property of transmitting light without serious diffusion chrysoberyla rare hard yellow green mineral consisting of beryllium aluminate in crystal form; used as a gemstone garnetany of a group of hard glassy minerals (silicates of various metals) used as gemstones and as an abrasive opala translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones amethysta transparent purple variety of quartz; used as a gemstone aquamarinea transparent variety of beryl that is blue green in color cat's eyeany of various gems (as chrysoberyl or chalcedony) that reflect light when cut in a rounded shape calcedony, chalcedonya milky or greyish translucent to transparent quartz chrysolitea brown or yellow-green olivine found in igneous and metamorphic rocks and used as a gemstone chrysoprasea green variety of chalcedony valued as a gemstone citrinesemiprecious yellow quartz resembling topaz coral, precious coral, red coralthe hard stony skeleton of a Mediterranean coral that has a delicate red or pink color and is used for jewelry adamant, diamondvery hard native crystalline carbon valued as a gem emeralda green transparent form of beryl; highly valued as a gemstone jade, jadestonea semiprecious gemstone that takes a high polish; is usually green but sometimes whitish; consists of jadeite or nephrite jasperan opaque form of quartz; red or yellow or brown or dark green in color; used for ornamentation or as a gemstone kunzitea pinkish lilac crystal form of the mineral spodumene that is used as a gemstone lapis lazuli, lazulian azure blue semiprecious stone moonstonea transparent or translucent gemstone with a pearly luster; some specimens are orthoclase feldspar and others are plagioclase feldspar morganitea kind of pink beryl used as a gemstone peridota pale green variety of chrysolite; used as a gemstone rubya transparent deep red variety of corundum; used as a gemstone and in lasers water sapphirea deep blue cordierite often used as a gemstone sapphirea precious transparent stone of rich blue corundum valued as a gemstone hiddenitea green transparent form of the mineral spodumene used as a gemstone aventurine, sunstonea translucent quartz spangled with bits of mica or other minerals topaza mineral (fluosilicate of aluminum) that occurs in crystals of various colors and is used as a gemstone tourmalinea mineral that is a complex borosilicate and hydroxide of aluminum containing iron and magnesium and calcium and lithium and sodium; it is usually black but occurs in transparent colored forms that are used as gemstones turquoisea blue to grey green mineral consisting of copper aluminum phosphate crystal a solid formed by the solidification of a chemical and having a highly regular atomic structure |
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