verneuil growth
1Verneuil 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… …
2Verneuil-Verfahren — Vereinfachtes Prozess Schema des Verneuil Verfahrens Das Verneuil Verfahren ist ein tiegelfreies Flammenschmelzverfahren für die Herstellung synthetischer Edelsteine, das 1902 vom französischen Chemiker Auguste Verneuil veröffentlicht wurde.… …
3Verneuil 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… …
4Auguste Verneuil — Auguste Victor Louis Verneuil (* 1856; † 1913) war ein französischer Chemiker, der durch die Erfindung eines kommerziellen Prozesses für die Herstellung synthetischer Edelsteine bekannt wurde. 1902 erfand er den Flammenfusions Prozess, der heute… …
5Diamond 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… …
6Sapphire — For other uses, see Sapphire (disambiguation). Sapphire The 423 carat (85 g) blue Logan sapphire General Category Oxide mineral …
7geochronology — 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] * * *… …
8Hydrothermal synthesis — includes the various techniques of crystallizing substances from high temperature aqueous solutions at high vapor pressures; also termed hydrothermal method . The term hydrothermal is of geologic origin. Geochemists and mineralogists have studied …
9Micro-pulling-down — Contents 1 Basics 2 Crystal growth routine 3 See also 4 References 5 External links …
10Corundum — General Category Oxide mineral – Hematite group Chemical formula Alumi …
