Editing Spinel (section)

==Synthetic spinel==
Synthetic spinel can be produced by similar means to synthetic corundum, including the [[Verneuil method]] and the [[Ceramic flux|flux method]] pioneered by [[Edmond Frémy]]. It is widely used as an inexpensive cut gem in [[birthstone]] [[jewelry]] for the month of [[August]]. Light blue synthetic spinel is a good imitation of aquamarine beryl, and green synthetic spinel is used as an emerald or tourmaline simulant.<ref>Simon & Schuster's Guide to Gems and Precious Stones, K. Lyman, 1996</ref> By 2015, transparent spinel was being made in sheets and other shapes through [[sintering]].<ref>{{cite web|url=http://phys.org/news/2015-04-applications-tough-spinel-ceramic.html|title=Researchers finding applications for tough spinel ceramic|work=Phys.org|date=24 April 2015}}</ref> Synthetic spinel, which looks like glass but has notably higher strength against pressure, can also have applications in military and commercial use.<ref>{{cite web|url=https://www.nrl.navy.mil/Media/News/Article/2534832/transparent-armor-from-nrl-spinel-could-also-ruggedize-your-smart-phone/|title=Transparent Armor from NRL; Spinel Could Also Ruggedize Your Smart Phone|publisher=Naval Research Laboratory|date=23 April 2015 |access-date=4 August 2023 |url-status=live |archive-url=https://web.archive.org/web/20230804234329/https://www.nrl.navy.mil/Media/News/Article/2534832/transparent-armor-from-nrl-spinel-could-also-ruggedize-your-smart-phone/ |archive-date=4 August 2023}}</ref>

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