This piece has been purchased and remains in this collection for the purpose of art. is approx 2 inches, wrapped in silver plated wire and includes 20" silver chain. To request an 18" or 24" chain, simply leave a note to seller at checkout.  White agate is believed to be beneficial for mental issues, including everyday challenges such as frustration and anxiety when worked with often during meditation. It is believed to stimulate the crown chakra and is often used to make worry stones.