7 inch(38~40cm). Grade A Natural Quartz Crystal Beads Strands.Spiritual Properties of Crystal: ● Energy amplification: Quartz Crystal has the ability to amplify and enhance energy, making it a powerful tool for intention setting and manifestation. ※ Please note that there is no specific scientific evidence to prove the therapeutic effects of stones, but gemstone therapy meditation may induce a placebo effect that helps you relax the mind.