The Wisdom Necklace is made of sterling silver rhodium chain, with sterling silver beads combined with freshwater natural pearls and blue kyanite healing gemstones. This necklace is 18.5 inches or 20 inches in length. Pearl size: 7-8mm Gemstones / sterling silver beads: 8mm Ethically made in Los Angeles Blue Kyanite is known to help relieve stress and encourage a calm state of being. Wearers of this unique stone can benefit from a promoted state serenity.