Spinel
Natural stone
A hard, bright stone in red, pink, blue and more, long mistaken for ruby. Seldom treated, and good in rings.
Hardness (Mohs): 7.5–8
Natural stone
A hard, bright stone in red, pink, blue and more, long mistaken for ruby. Seldom treated, and good in rings.
Hardness (Mohs): 7.5–8