Peridot is 6.5 to 7 out of 10 on the Mohs hardness scale, meaning it is reasonably durable. Peridot jewellery is generally hardy enough for everyday wear, but it's still important to treat your gems with care. Your peridot stone can be scratched by materials such as diamonds that hold a hardness level of 6.5 or higher—so it's wise to store your peridot stone jewellery in a box, pouch, or away from any abrasive products that may scratch it.