Black Tourmaline is a great stone of protection. It’s great for empaths. Use these for magical spells or in your work area to dispel negativity. Check the photos for measurement next to a quarter, which is approximately one inch. These weigh 100 grams each. The picture shows the quality of the item you will receive. The individual colors and size may vary. The price listed is for one bag of 100 grams (sample amount and quality pictured).