Overall Dimension: 2.25 x 0.35 x 0.35 inches; Back Type: Hook. SKU: e25760; Weight: 4.4g; Stone: 2 genuine larimar; Material: Genuine Sterling Silver (925 silver, 92.5% silver content); Stamp: 925; Larimar is a rare gemstone found only in an inaccessible region of the Dominican Republic overlooking the Caribbean Sea. The sky blue stone's name was coined by a Dominican, Miguel Méndez, who combined his daughter's name Larissa, with mar, the Spanish word for sea.