red+chalcedony
51ruby — Synonyms and related words: Titian, Titian red, adamant, agate, alexandrite, amethyst, aquamarine, beryl, bloodstone, bricky, brilliant, carbuncle, cardinal, carmine, carnation, carnelian, cerise, chalcedony, cherry, cherry colored, cherry red,… …
52Spain — /spayn/, n. a kingdom in SW Europe. Including the Balearic and Canary islands, 39,244,195; 194,988 sq. mi. (505,019 sq. km). Cap.: Madrid. Spanish, España. * * * Spain Introduction Spain Background: Spain s powerful world empire of the 16th and… …
53Cinnabar — This article is about the mineral. For the plant resin, see Dragon s blood. For the moth, see Cinnabar moth. Cinnabar Cinnabar on Dolomite General …
54List of minerals (synonyms) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association (IMA) is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go …
55HELIOTROPE — or BLOODSTONE a variety of quartz (chalcedony or jasper) of a deep green colour, with bright red spots. The finest specimens, which come from South Asia, are of fairly translucent chalcedony; those of jasper are opaque; they are used as… …
56Lothal — (Gujarātī: લોથલ, IPA2|ˈloːtʰəl, Eng: Mound of the Dead) was one of the most prominent cities of the ancient Indus valley civilization. Located in the modern state of Gujarāt and dating from 2400 BCE, it is one of India s most important… …
57geochronology — geochronologic /jee oh kron l oj ik/, geochronological, adj. geochronologist, n. /jee oh kreuh nol euh jee/, n. the chronology of the earth, as based on both absolute and relative methods of age determination. [1890 95; GEO + CHRONOLOGY] * * *… …
58Lustre (mineralogy) — Lustre (or luster) is a description of the way light interacts with the surface of a crystal, rock, or mineral. The word lustre traces its origins back to the Latin word lux, meaning light , and generally implies radiance, gloss, or brilliance. A …
59Cornelian — is a red variety of chalcedony, which is cryptocrystalline quartz. Its red colour is due to the presence of iron impurities in the form of iron oxide or hematite. It can vary from a flesh red to a clear red. It is usually cut en cabochon, or into …
60Sard — is a reddish brown chalcedony, SiO2, much used by the ancients as a gemstone. Pliny the Elder states that it was named from Sardis, in Lydia, where it was first discovered; but the name probably came with the stone from Persia (Pers. sered,… …
