Diopside is a relatively unknown however beautiful gemstone. Gemstone quality diopside is found in two forms: the black star diopside which has a 4 ray star and the chrome diopside(which includes chromium giving it a rich green color). At 5.5-6.5 on the Mohs scale, chrome diopside is relatively soft to scratch. Today, most diopside is being mined in Russia. We have the following diopside gemstones in our stock. Click here to see our finished Black Star & Chrome Diopside Jewelry.