Oval Natural Mahogany Obsidian Thumb Worry Stone for Anxiety Therapy, Size: about 1.40 inch(35.5mm) wide, 1.79 inch(45.5mm) long, 0.33 inch(8.5mm) thick. â»Please note that the healing properties of gemstone is not scientifically proven , but gemstone therapy meditation may induce a placebo effect that helps you relax the mind.
