Gemstone : Natural Herkimer Diamond Our Jewelry are made of 925 Sterling Silver Rough Gemstone Womens Ring All jewelry is 925 Stamped Benefits of Herkimer diamond gemstone : Herkimer diamond is believed by some to have metaphysical properties including healing, increasing spiritual energy and opening up the crown and third eye chakras. Known as the 'Stone of Attunement', Herkimer diamond can purportedly be used to help those looking to experience astral travel or have lucid dreams.