Necklace and bracelet with amethyst, clear crystal and aventurine

Adult bracelet: Use 24 cm of elastic, which results in a finished length of 18 cm.
Adult necklace: Use 51 cm of elastic, which results in a finished length of 45 cm.
For children: Measure the child's wrist and neck before tying the knot.
Knot: Secure the elastic with a double knot and pull tightly. If necessary, add a drop of glue for extra hold.