Larimar

Hardness: 4.5-5 on the Mohs scale, relatively soft.; Color: Ranges from light blue, sometimes with white, to greenish-blue and deep azure blue. Often has white streaks or patterns.; Luster: Silky to sub-vitreous (glassy) when polished.; Crystal Structure: Triclinic system, typically massive, forming as aggregates of needle-like or bladed crystals that are intergrown.; Cleavage: Perfect in two directions.; Specific Gravity: 2.74-2.88.

Larimar is a rare blue variety of the mineral Pectolite. It forms in cavities within basaltic volcanic rocks. The blue color is due to the presence of manganese within the Pectolite structure. Its formation is related to hydrothermal activity in volcanic rocks, where hot, mineral-rich fluids circulate through fractures and deposit minerals. Geologically, it is found in relatively young volcanic formations, likely Cenozoic in age.

Primarily used as a gemstone in jewelry due to its striking blue color and unique patterns. It is often cut into cabochons, beads, and carved into ornamental objects. Its relative softness means it is not suitable for industrial use or heavy-wear jewelry.

Larimar is sometimes called the 'Atlantis Stone' or 'Dolphin Stone' due to its oceanic blue color and its discovery in the Caribbean. It was first officially identified in 1974 by Miguel Méndez and named after his daughter Larissa and 'mar', the Spanish word for sea.

Larimar is incredibly rare and is currently found in only one location in the world: the Filipinas Mine in the Bahoruco mountain range, Barahona Province, Dominican Republic. In the field, look for distinct sky-blue to sea-green hues within volcanic rock formations. It typically displays a soft, almost wave-like or swirled pattern of blue and white. Its relative softness might be noticeable if you can scratch it with a knife (though this is not recommended for valuable specimens). Its unique color and pattern make it quite distinctive.