(n.) A mineral occuring in octahedrons of great hardness and various colors, as red, green, blue, brown, and black, the red variety being the gem spinel ruby. It consist essentially of alumina and magnesia, but commonly contains iron and sometimes also chromium.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). spinelle. Retrieved September 20, 2026, from http://smartdefine.org/spinelle/definitions/2064939 |
| Chicago | Webster's. 2011. "spinelle" http://smartdefine.org/spinelle/definitions/2064939 (accessed September 20, 2026). |
| Harvard | Webster's 2011, spinelle, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/spinelle/definitions/2064939>. |
| MLA | Webster's. "spinelle" 28 May 2011. Web. 20 September 2026. <http://smartdefine.org/spinelle/definitions/2064939> |