La Pita is one of the principal emerald-producing mines of Colombia, situated in the western emerald belt of the Boyaca Department, roughly 110 kilometres north of Bogota and within the Maripi municipality. Together with Coscuez, Penas Blancas and Cunas, it forms the cluster of working mines that has dominated Colombian emerald output since the late 1990s.

The deposit lies in the lower Cretaceous black shales of the Rosablanca Formation, where hydrothermal fluids interacted with carbonaceous host rock to produce hydrothermal-veined emerald in calcite, dolomite and pyrite matrix. Mineralisation tends to occur in lensoid pockets along thrust planes and in association with brecciated wall rock. Crystals from La Pita commonly show well-formed hexagonal habit, slender to stout prisms, and are often recovered with the distinctive parallel growth steps that Colombian rough exhibits.

Production character

La Pita material is generally regarded by the trade as cleaner than Muzo and slightly more bluish-green than the warm green of Chivor, though there is overlap. Stones can show three-phase inclusions composed of a liquid, a halite cube and a gas bubble, the diagnostic feature long associated with Colombian provenance. Jagged growth tubes, calcite blades and pyrite crystals are also common.

The mine produced significant tonnages through the 2000s and remains active under a concession system that has, at various points, been operated by Colombian and international groups including the Coscuez consortium and, more recently, joint ventures involving the major export houses of Bogota.

Trade significance

For the wholesale market, La Pita stones occupy the same broad pricing tier as other Boyaca production, with price principally driven by colour saturation, clarity and the absence of obvious oil or resin filling. Origin reports from major laboratories will typically identify a stone simply as Colombian rather than naming the specific mine, since geochemical signatures across the western belt overlap.

From the cutter's standpoint, La Pita rough rewards careful planning: the crystals frequently carry surface-reaching fissures that limit yield, and the trade-standard cedarwood-oil treatment is applied in nearly every commercial stone to improve apparent clarity.