A crystal is a solid material whose atoms or molecules are arranged in a highly ordered, repeating pattern, which gives rise to its characteristic geometric shape. A crystal can be made up of a single type of molecule, such as a diamond, or a complex arrangement of different types of molecules, such as in quartz. On the other hand, a mineral is a naturally occurring, inorganic substance that has a definite chemical composition and crystalline structure. In other words, all crystals are solid materials with a highly ordered structure, but not all crystals are minerals.

When we think of the sun as the centre of the solar system, then we do not think of the sun as a planet. However, when we view the universe from the Earth, we do consider the sun and the moon as planets. The forces, which can be symbolised as planets, can be considered from their psychological aspects. For example, the sun can be thought of as representing our tendency to integrate the other aspects of our personality. This is really the same as saying that the sun brings wholeness to our lives.

The planets symbolise the forces in the cosmos, and the signs depict how these forces operate. As an example, the sun signifies integration and when positioned in Aries, it manifests with energetic and pressing traits, revealing a strong and lively desire for integration.