Yin and yang components come in pairs, such as the moon and the sun, feminine and masculine, dark and bright, cold and hot, passive and active, and so on. Yin and yang are not static nor mutually exclusive terms. The nature of yin yang lies in the interchange and interplay of the two components—the transposition of day and night. While the world is composed of many different, sometimes opposing, forces, these forces still coexist and even complement each other. Sometimes, forces opposite in nature even rely on each other to exist like there cannot be a shadow without light.
The balance of yin and yang is essential. If yin is more robust, yang will be weaker, and vice versa. Yin and yang can interchange under certain conditions, so they are usually not yin and yang alone. In other words, yin elements can contain specific parts of yang, and yang can have some components of yin. It is believed that this balance of yin and yang exists in everything. This Yin Yang crystal grid is made out of Birchwood. These are made to order; you can choose between approximately 6, 8, 10, 12, and 14 inches in diameter and 1/4″ thick. This is just for the grid. Stones purchased separately.