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.

This schist-hosted emerald revealed an intriguing surface-reaching agglomeration of pyrochlore (high-than-host luster) and phlogopite mica (similar-to- and lower-than-host lusters); identified by micro Raman spectroscopy.
This crystal in an emerald looked just like a “B.” Perhaps that is fitting for a member of the “B”eryl family!
Irregularities in the crystal structure create the roiled “gota de aceite,” (Spanish for “drop of oil”) effect in this emerald. This effect is often associated with Colombian emeralds. Here crossed polars reveal strain patterns between the growth structures.
Irregularities in the crystal structure create the roiled “gota de aceite,” (Spanish for “drop of oil”) effect in this emerald. This effect is often associated with Colombian emeralds.
When this emerald was gently warmed with a hot point, droplets of resin began to leak out of the fissures. When illuminated with a long wave UV torch, the areas with resin display a chalky appearance, particularly where two large round droplets are concentrated.
When this emerald was gently warmed with a hot point, droplets of resin began to leak out of the fissures. These droplets can be observed with reflected light.
The thin films present in this Russian emerald show dazzling interference colors.
Close up of a trapiche emerald. The hexagonal structure of the emerald can be clearly observed.
Blocky two-phase inclusions like those pictured here are often found in emeralds from Zambia and other schist-hosted origins. The bubbles seen inside are carbon dioxide. Specimen courtesy Gemfields.
Blocky two-phase inclusions like those pictured here are often found in emeralds from Zambia and other schist-hosted origins. The bubbles seen inside are carbon dioxide. Specimen courtesy Gemfields.
Blocky two-phase inclusions like those pictured here are often found in emeralds from Zambia and other schist-hosted origins. The bubbles seen inside are carbon dioxide. Specimen courtesy Gemfields.
An interesting multiphase inclusion is trapped in this Zambian emerald. While micro Raman analysis could not identify all of the components, it did confirm the presence of carbon dioxide and cristobalite. Specimen courtesy Gemfields.

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.