Amethyst crystal thumb / worry stones. The colouring of these stones is purple. The front sides have indentations which should be used to rub your thumb over to distract your mind and reduce worry and stress. One of the stones has a natural defect on the side that has been polished out.
This stone calms or stimulates the mind as appropriate.
See more thumb / worry stones here
Country of origin: Brazil
Size: 4.7 x 3.9 x 0.9 cm approx measured at the largest points
Weight: 25 - 31 grams approx