LARIMAR RING. Larimar is currently a very popular jewellery stone, it can only be found in one spot. the Dominican Rep. This ring features a highly polish Larimar cabochon (cab) which is set into a solid split shank design. Larimar is a serene crystal that can promote relaxation and calm. The ring is size 57 (or P), it weights 7.5g and the stone size is 16mm x 11mm.