Yin and Yang, Tai Chi, Black Obsidian & White Howlite Necklace 1167 Yin and yang elements come in pairs—such as the moon and the sun, female and male, dark and bright, cold and hot, passive and active, and so on—but note that yin and yang are not static or mutually exclusive terms. While the world is composed of many different, sometimes opposing, forces, these can coexist and even complement each other. Sometimes, forces opposite in nature even rely on one another to exist. The nature of yin-yang lies in the interchange and interplay of the two components. The alternation of day and night is just such an example: there cannot be a shadow without light. The balance of yin and yang is important. If yin is stronger, yang will be weaker, and vice versa. Yin and yang can interchange under certain conditions so that they are usually not yin and yang alone. In other words, yin elements can contain certain parts of yang, and yang can have some components of yin. This balance of yin and yang is perceived to exist in everything. You will receive one necklace that I will intuitively choose from the ones pictured in this listing. Size is approximate and each necklace varies. See more at stonepathtrading.com