Larimar is actually a rock, being composed of more than one mineral, but is mostly composed of pectolite. It has been given the trade name "Larimar".
Only (re-)discovered in the Dominican Republic in the mid 1970's, it has enjoyed success in the semi-precious stone market. Its translucent, sky blue color is attractive and has a loyal following of admirers. It has a turquoise look to it, although the color is distinctly more blue.
Larimar has been used in the same manner as turquoise and is even seen in contemporary Native American jewelry. It has been quite versatile in its applications to other jewelry varieties. Larimar offers a different color to those who like polished stone jewelry.