We regularly hear that emerald rings are fragile, that we should be careful with them, or even that we should not buy them. Obviously this is not true and we must set the record straight: there is a scale of relative hardness of stones, called Mohs’ scale, which measures that the hardest stone is the diamond level 10. Sapphire and ruby (corundum family) are level 9. And the emerald is between 7.5 and 8. So no need to panic, your emerald is hard enough to wear. Of course your emerald rings don’t like shocks, but be aware that diamonds don’t like shocks either and they can also break. Our advice for taking care of your jewelry is always the same: avoid chemicals, water for too long and heat.