Gray Agate is known as the "stone of knowledge and wisdom" because it promotes clarity of thought, enhance analytical abilities, encourage introspection. Semi precious Gray Agate, 18K Gold filled hardware Approx.1.5" long Handcrafted in our Charleston, South Carolina studio To maintain your HOLST+LEE jewelry, avoid prolonged contact with water, creams or spray *As these are natural stones, there may be variants in color