Description All of our Minerals & Crystals are 100% Genuine Specimens & come with a Certificate of Authenticity! Dumortierite is a fibrous variably coloured aluminium boro-silicate mineral, Al₇BO₃(SiO₄)₃O₃. Dumortierite crystallizes in the orthorhombic system typically forming fibrous aggregates of slender prismatic crystals. The crystals are vitreous and vary in colour from brown, blue, and green to more rare violet and pink. Worry stones are smooth, polished gemstones, usually in the shape of an oval with a thumb-sized indentation, used for relaxation or anxiety relief. The smoothness of the stone is most often created naturally by running water. The size of a worry stone is often about half the size of a silver dollar coin in the United States. They are used by holding the stone between the index finger and thumb and gently moving one’s thumb back and forth across the stone. This action of moving one’s thumb back and forth across the stone can reduce stress. Worry stones may also be called palm stones, thumb stones, fidget stones, soothing stones, or sensory stones. AVERAGE SIZE: 40-50mm SIMILAR TO SEEN: The image shows an example of the single specimen you will receive. This will be picked from our stock box graded and with a size within the minimum and maximum size range indicated. It will not be the exact specimen in the photo, the colours, shape, size and style may vary as with any natural item.
