Origin of spinel
Examples from the Web for spinel
Historical Examples of spinel
The hardness of Spinel is 8, or about that of topaz, and the specific gravity 3.6.
A ring with a spinel ruby in it dropped out: she recognised the stone—it was Miss Minerva's ring.Heart and Science
The natives of India call the Spinel the pomegranate ruby and believe to this day that it possesses valuable medicinal properties.
Spinel is singly refracting in polarized light and corundum doubly refracting.
Not only is Spinel ruby related to corundum ruby in color and use, but the two are frequently associated together in nature.