A rare gemstone, part of one of the world’s greatest gem collections, will be offered for sale for the first time in 98 years. The Hope Spinel will be among the top lots of Bonhams London Fine ...

Spinel, MgAl 2 O 4 (download cif), is a rare gemstone that was used to imitate rubies. The structure has face-centered cubic symmetry, and is a little heavy to understand. The general formula is AB 2 ...

Co spinel——saturable absorbers for the passive Q-switching of solid-state lasers operating at eye-safe wavelength of 1.5 μm Cobalt-doped magnesium aluminate spinel (Co:MgAl2O4) allow the generation of ...

Another perspective on spinel comes from looking at its unit shell (counter-intuitive, I know). First we show the Mg atoms, which form an fcc aray, plus 4 more atoms inside the cube. Those 4 are ...

Shares of Clean Diesel Technologies (CDTI) are jumping in Tuesday's afternoon trading session after the company released initial vehicle test results for its Spinel technology. Shares of Clean Diesel ...