Valli Olivina is the mineral that constitutes peridotitic rocks. It is an isomorphous mixture of magnesium silicate (Forsterite) and iron silicate (Fayalite).

Valli Olivina is available in two colours: grey green and green/light green. The two colours differ not only in the shade but also in the different percentage of Forsterite and Fayalite in the mineral, which cause a higher or lower content of magnesium oxide and a higher or lower refractoriness.

Valli Olivina is available in different grain sizes.