What Is The Best Substitute For Emerald?

What Is The Best Substitute For Emerald? Peridot gemstone and Green Tourmaline are the substitutes for an Emerald that are highly similar to it in terms of looks and shower the same benefits. Peridot: Peridot stone is a gem-like member of the magnesium rich silicate mineral family of Olivine. Which is better emerald or peridot?