star corundum
1Star stone — Asteria, or star stone (from Gr. do rip, star ), is a name applied to such ornamental stones as exhibit when cut en cabochon a luminous star. The typical asteria is the star sapphire, generally a bluish grey corundum, milky or opalescent, star of …
2Star sapphire — Sapphire Sap phire (? or ?; 277), n. [OE. saphir, F. saphir, L. sapphirus, Gr. ?, of Oriental origin; cf. Heb. sapp[=i]r.] 1. (Min.) Native alumina or aluminium sesquioxide, {Al2O3}; corundum; esp., the blue transparent variety of corundum,… …
3Gemstone — 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… …
4звёздчатый корунд — — [Англо русский геммологический словарь. Красноярск, КрасБерри. 2007.] Тематики геммология и ювелирное производство EN star corundum …
5Sapphire — For other uses, see Sapphire (disambiguation). Sapphire The 423 carat (85 g) blue Logan sapphire General Category Oxide mineral …
6Asterism (gemmology) — This article is about the characteristic in some gems. For other uses, see Asterism (disambiguation). Asterism on the surface of a blue star sapphire. This is the 182 carat (36.4 g) Star of Bombay, housed in the National Museum of Natural History …
7jewelry — /jooh euhl ree/, n. 1. articles of gold, silver, precious stones, etc., for personal adornment. 2. any ornaments for personal adornment, as necklaces or cuff links, including those of base metals, glass, plastic, or the like. Also, esp. Brit.,… …
8sapphire — /saf uyeur/, n. 1. any gem variety of corundum other than the ruby, esp. one of the blue varieties. 2. a gem of this kind. 3. the color of this gem, a deep blue. adj. 4. resembling sapphire; deep blue: a sapphire sky. [1225 75; < L sapphirus < Gk …
9Verneuil 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… …
10Verneuil process — /verr noy /; Fr. /verdd nue yeu/ a process for making synthetic rubies, sapphires, spinels, etc., by the fusion at high temperatures of powdered compounds. Also called flame fusion process. [named after A.V.L. Verneuil, 19th century French… …
