Gem quality Diopside's are mined in Siberia (Russia), Italy, Sri Lanka, Brazil, Madagascar, South Africa and Pakistan. Uzbekistan, located between Tajikistan and Turkmenistan, is becoming an important locality for a variety of Russian Diopside called Tashmarine. This variety has a slightly lower Chromium content than the Siberian material, a less saturated color and can display grey or brown tones. India has the largest deposits of phenomenal Diopside's such as Catís Eye or Star Diopside's. The color of African Diopside tends to be a more yellowish color similar to Peridot.
Gemstones are now the largest growth sector in the jewelry business