Beryl (var. Emerald) trapich

This is a very rare trapiche emerald in albite matrix from Colombia, displaying the characteristic hexagonal form that makes these specimens so distinctive and sought after.

Trapiche emeralds form through a multi-stage growth process. First, a central, tapered emerald core crystallizes under hydrothermal conditions. Growth then slows or temporarily ceases before restarting under slightly different conditions. The hexagonal prism faces of the original emerald core continue to grow while the areas between those faces become filled predominantly with albite. This results in the classic trapiche structure: six emerald “spokes” radiating from a hexagonal core, separated by six albite-rich sectors. Importantly, the core and surrounding sectors together form a single, untwinned crystal.

Complete trapiche emerald crystals are exceptionally rare, making this small but superb example both highly educational and visually striking. The form is unusually well preserved, allowing the growth structure to be clearly observed, something seldom seen in trapiche material. Most of trapiche crystals you'll find online have been sawn into slices.

This specimen originates from the lesser-known Muzo Mine in Colombia, one of the historic emerald-producing districts of the country. Trapiche emeralds occupy a class entirely of their own, instantly recognizable and unforgettable once seen. They were first described in the mineralogical literature in an 1879 French bulletin, and fine examples such as this remain rare, collectible, and scientifically fascinating.