Benefits of Amethyst Crystal:- It provides protection from negative energies. It is helpful in insomnia and nightmares. Meditating with Amethyst reduces anger, anxiety, stress and depression. It is useful for fighting addiction. It improves concentration, enhances memory and is helpful in studies. Amethyst strengthens metabolism and immune system. Size:- 4 mm 44 Beads | 6 mm 32 Beads | 8 mm 24 Beads | 10 mm 19 Beads | 12 mm 17 Beads. Natural Stone | Round Beads | Handmade Elastic Bracelet. Please note: You will receive one crystal similar to the ones photographed. Photos show typical quality. Each and every crystal is unique.