There’s an extremely rare precious stone that has been found only in one very small location on the planet: the remote Sierra de Bahoruco of the Dominican Republic. The stone was originally thought to have come from the sea; its exquisite colour, ranging from light blue to green-blue to deep blue mirroring the colours of the Caribbean Sea.
In 1974 a local craftsman Miguel Méndez and Norman Rilling, a Peace Corps geologist, realized that the blue stones they had found on the beach were alluvial sediment and followed the trail of blue pebbles upstream along the Bahoruco River to locate the host outcrop in the Sierra de Bahoruco mountains. Miguel coined the name by combining his daughter’s name – Larissa – with the Spanish word for sea – mar – yielding the name, larimar.
How did this mineral come to be formed?
The North American tectonic plate pushes down from the north, the South American plate is pushing up from the south; between these two tectonic behemoths, the small Caribbean plate is being squeezed and crushed against the even smaller Gonâve microplate on which lies the island of Hispaniola and thus the DR, which occupies the eastern two thirds of the island.
The “Septentrional-Orient Fault Zone” (SOFZ) is a system of active sideways moving strike slip faults that grinds along the north side of the island, making the Dominican Republic an exciting place – geologically speaking. It pushes up mountains, carves deep valleys, and also creates the conditions for hot hydrothermal fluids which circulate through the fractured rock and concentrate minerals – copper, silver, nickel, and especially gold. The same hydrothermal fluids that concentrated the gold also created larimar, this mineral unique to the Dominican Republic.
Larimar is still being mined in the DR. It’s mostly produced in small scale, artisan mines by community groups with limited machinery and equipment.
Larimar makes beautiful jewelry and it also considered a healing stone. Its intense, harmonious feminine energy is said to encourage positivity and tranquillity!
© Hannes Grobe