The concept of a Trinity or triadic nature of the divine has been a part of our psyche for thousands of years.
Three is the first number to which the meaning “all” was given. It is The Triad, being the number of the whole as it contains the beginning, a middle and an end. The power of three is universal and is the tripartide nature of the world as heaven, earth, and waters. It is human as body, soul and spirit. Mother, father, child. Each stone represents the divinity found within your past, present, and your.future.
Whether you understand Alchemy as a science or as a spiritual instrument, alchemy is ultimately concerned with transformation and change.
While physical alchemy is concerned with altering and transforming the properties within matter, spiritual alchemy is concerned with freeing your spiritual self which is trapped within you by the unrefined parts of yourself (e.g. your fears, personal beliefs, self-loathing, etc.). Spiritual alchemy is vastly more multi-faceted.
Existing in “pure being,” or soulful awareness is the ultimate state of transformation – the gold – of spiritual alchemy.