Larimar, with its captivating blue color, which can vary from light blue to pale green or intense sky blue, has a hardness of 4.5 to 5 on the Mohs hardness scale. This enthralling gemstone has a fibrous-radiated structure and is opaque or semi-translucent with silky, sub-vitreous luster. https://www.sagaciajewelry.com/blogs/news/larimar-meaning-healing-properties-formation-uses-facts-and-care