Chemijos terminų aiškinamasis žodynas – 2-asis patais. ir papild. leid. – Vilnius: Mokslo ir enciklopedijų leidybos institutas. Kazys Daukšas, Jurgis Barkauskas, Vitas Daukšas. 2003.
corundum — /keuh run deuhm/, n. a common mineral, aluminum oxide, Al2O3, notable for its hardness: transparent varieties, as sapphire and ruby, are used as gems, other varieties as abrasives: often made synthetically. [1720 30; < Tamil kuruntam; akin to Skt … Universalium
Corundum — General Category Oxide mineral – Hematite group Chemical formula Alumi … Wikipedia
Auguste Victor Louis Verneuil — (1856 1913) was a French chemist best known for inventing the first commercially viable process for the manufacture of synthetic gemstones. In 1902 he discovered the flame fusion process, today called the Verneuil Process, which remains in use… … Wikipedia
elektrokorundas — statusas T sritis chemija apibrėžtis Dirbtinis korundas, pagamintas lankinėje lydkrosnėje. atitikmenys: angl. artificial corundum rus. электрокорунд … Chemijos terminų aiškinamasis žodynas
электрокорунд — elektrokorundas statusas T sritis chemija apibrėžtis Dirbtinis korundas, pagamintas lankinėje lydkrosnėje. atitikmenys: angl. artificial corundum rus. электрокорунд … Chemijos terminų aiškinamasis žodynas
Sapphire — For other uses, see Sapphire (disambiguation). Sapphire The 423 carat (85 g) blue Logan sapphire General Category Oxide mineral … Wikipedia
Ruby — This article is about the mineral. For other uses, see Ruby (disambiguation). Ruby Natural ruby crystals from Winza, Tanzania General Category … Wikipedia
Verneuil process — The Verneuil process, also called flame fusion, was the first commercially successful method of manufacturing synthetic gemstones, developed in 1902 by the French chemist Auguste Verneuil. It is primarily used to produce the ruby and sapphire… … Wikipedia
Diamond simulant — Due to its low cost and close visual likeness to diamond, cubic zirconia has remained the most gemologically and economically important diamond simulant since 1976. The high price of gem grade diamonds, as well as significant ethical concerns of… … Wikipedia
Gemstone — Jewels redirects here. For other uses, see Jewels (disambiguation). Precious Stone redirects here. For the James Bond character, see Hurricane Gold. For other uses, see Gemstone (disambiguation). A selection of gemstone pebbles made by tumbling… … Wikipedia
