Sky-Blue Euclase from Mina Guavio, Colombia

This specimen presents a freely developed euclase crystal from Mina Guavio near Macanal in the department of Boyacá, Colombia. Measuring 2.2 × 2.0 × 1.6 cm and weighing 32.5 ct, the crystal is notably large for this comparatively rare mineral species.

The euclase displays a delicate sky-blue color that becomes more intense in some areas. It is predominantly translucent, with partially transparent zones along individual edges. Its size, blue color, and documented origin within Colombia’s emerald belt make it a remarkable collector’s specimen.

A Rare Euclase Crystal from Colombia

Euclase is a comparatively rare beryllium aluminum silicate that occurs as well-developed crystals at only a limited number of localities. Colombia is primarily known for its emeralds, but it also produces rare euclase crystals.

This crystal comes from the Macanal area in the department of Boyacá. Euclase from this region appears considerably less frequently on the international mineral market than emeralds or the more commonly offered associated minerals from Colombian deposits.

Why This Specimen Is Presented in the Showroom

This specimen combines a rare mineral species with a notable crystal size and an attractive sky-blue color. Its weight of 32.5 ct is particularly noteworthy and clearly distinguishes the crystal from many smaller euclase specimens.

Its documented origin from Mina Guavio near Macanal adds further interest. Specimens from this provenance are considerably less well known than euclase crystals from the better-known Colombian localities of Gachalá and Chivor. Although the precise frequency of such finds cannot be reliably quantified, well-documented examples from Macanal are only comparatively rarely offered.

The combination of size, color, freely developed single-crystal form, and Colombian provenance makes this euclase a distinctive display specimen within the Colombia collection of Mineralien-Weltweit.

Euclase from Macanal

Macanal lies in the department of Boyacá in Colombia’s Eastern Cordillera. The region forms part of the broader eastern emerald belt and is mineralogically known primarily for emeralds as well as several rarer associated and specialty minerals.

In addition to the well-known emerald deposits, euclase also occurs in this region. Well-developed blue crystals, however, are considerably less common than classic Colombian emerald specimens.

This crystal therefore documents a lesser-known aspect of the mineralogy of Colombia’s emerald belt. Its size, color, and provenance make it interesting both for specialized euclase collections and for collections focused on Colombian minerals.

Video of the Euclase Crystal