One of the property or characteristics of mineral is color. Minerals with an inherent color have elements that are essential in them that cause the color.
For example, the strong blue and green color in Malachite and Azurite is due to the presence of copper element in their structure.
Therefore, the color of mineral depends on the presence of elements in their atomic structure. Fluorite mineral comes with a range of color, that is purple, green, blue, yellow or even colorless depending on the small amounts of different elements in its structure.
