Top 5 in Top 10 incredible surreal places on Earth.
Not a stone or rose, a phenomenon found in Mexico and Tunisia (and less common in Arizona) is called rock rose. Made of plaster or barite, these roses are created by evaporation when one or more of the other minerals bind sand particles in a dry, saline environment.
With an average size of 10 cm (4 in) on each petal, these rose-like stones are colored directly related to how they are formed. Those created in shallower positions usually produce amber petals, while deeper shapes in a larger space usually produce yellow or transparent petals.
The unique shape of these roses is not the only unusual thing about them. Regardless of their color during the day or where they grow, all will glow the same milky white when placed under ultraviolet light.