Fluorite is aligned with the astrological signs of Pisces and Capricorn. It is believed to cleanse and purify the body and stabilize energy, increasing the ability to concentrate and helping one to understand and maintain relationships. It is said to promote impartiality for unbiased reasoning. It is called a stone of discernment and aptitude, making it an excellent learning aid. Fluorite is thought to heal arthritis and headaches. Great for jewelry, medicine or amulet bags, or carry with you. Picked at random, each stone is a minimum of 12mm. I bought out a metaphysical store many years ago (hence the VERY low price!), and these were part of the many treasures included. I was not given a location where they were found, and I cannot obtain more. Sold per set of 4, undrilled. NOTE: If you are buying more than one item or lot, I will figure out actual shipping based on weight and refund you any difference.