These rings are set in 925 sterling silver. The white and brown stones is Wild Horse Magnesite & the greenish blue stone is Turquoise.  

Metaphysical Properties of Turquoise -Finding the truth, communication, manifestation, opens throat chakra, balancing emotions, expanding knowledge & wisdom. 

Metaphysical Properties of Wild Horse Magnesite - Stress release, healing, intelligence and learning, bringing luck, finding harmony in life, enhances flexibility of thinking, independence.