It is mainly the green Chromium rich variety of Diopside, known as Chrome Diopside, that is popular with collectors for its emerald green colour, although Diopside can be found in a variety of other colours. Some white specimens of Diopside glow a very bright blue colour under shortwave UV light.

Diopside is an excellent study aid that increases the capacity to learn, making it perfect for students or those who want to improve their skills. This crystal also intensifies love and commitment while connecting to the Heart Chakra. Diopside helps to calm aggression, creating a peaceful and loving environment. It creates a strong connection to the Earth and Nature, empowering and supporting emotions.