Emerald Inclusions

First Published: 7 September 2026

Emerald Inclusions

Explore emerald inclusions in Hyperion, the Lotus Gemology inclusion database. Hyperion contains photomicrographs of inclusions and internal features in natural emerald, documented with information on geographic origin, treatment, lighting conditions, field of view, photographer and published references.

Clustesr of small, dark crystals are visible in this Zambian emerald. Specimen courtesy Gemfields.
Dark platelets in an emerald from Zambia. Specimen courtesy Gemfields.
Dark platelets in an emerald from Zambia. When viewed with fiber optic light, as seen here, the platelets display a an iridescent metallic appearance. Specimen courtesy Gemfields.
Slim rods of what may be amphibole, alongside brown plates of what is probably mica in emerald of schist-hosted origin. The iridescent interference colors are produce by examining the specimen between crossed polars. This demonstrates that the crystals are doubly refractive, giving clues to their identity.
Several dark green crystals can be observed in this emerald. Analysis with micro Raman identified them as tremolite (amphibole).
Several solid inclusions can be observed in this emerald. When viewed in reflected light where cut through, we can see that their luster is just slightly different from that of the host emerald. Analysis with micro Raman revealed that these crystals are tremolite (amphibole).
When viewed in crossed polars, this calcite crystal (identified with micro Raman) displays interference colors and polysynthetic twin planes. This calcite is ensconced in an emerald from Colombia.
This crystal, suspended in a Colombian emerald, has sharp angular features. Micro Raman identified it as calcite. Note that twin planes are visible in crossed polars.
This emerald contained several elongated three-phase inclusions.
Micro Raman revealed that this cluster of inclusions in emerald contained a variety of crystals. The elongated crystal on the left is quartz, the area in the center contains calcite and apatite, and the right-most crystal is calcite.
This angular yellow stood out immediately when we examined this ermerald. Analysis with micro Raman revealed that it is parisite.
Iridescent thin films inclusions in Russian emerald.

Search the Complete Hyperion Database

Emerald inclusions may include mineral crystals, fluid inclusions, multiphase inclusions, healed fissures, growth features and other internal features formed during or after crystal growth. Such features are important to gemologists because they can provide evidence useful in identifying emerald, understanding its geological history, recognizing treatment and, in some cases, determining geographic origin.

Emerald Inclusion Photomicrographs

The Hyperion emerald gallery includes microscopic features found in emeralds from major deposits around the world. Each entry is accompanied by descriptive information and, where available, references to the gemological literature.

What Inclusions Can Reveal About Emerald

Inclusions are an important part of emerald identification. Their form, composition and associations can help gemologists distinguish natural emerald from synthetic material, recognize evidence of treatment, and study the geological environment in which the emerald formed.

Hyperion combines inclusion photomicrography with supporting gemological information so that individual features can be compared with documented examples from known emerald deposits.

About Hyperion

Hyperion is the Lotus Gemology searchable inclusion database. It allows users to browse gemstone inclusions by gem type, geographic origin, treatment and keyword.