Mozambique Ruby Inclusions

First Published: 7 September 2026

Mozambique Ruby Inclusions

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

Iridescence on a chalcopyrite crystal as it floats within the interior of a ruby from Mozambique’s Montepuez region.
A solidified droplet of glass was found on the surface of this Mozambique ruby, thus suggesting it had been subjected to artificial heat treatment.
A mica crystal with a lovely “rosette” inclusion surrounding it creates a secret beauty in this Montepuez (Mozambique) ruby.
Mozambique rubies contain mixed silk, where part is rutile and part is another mineral. When heated, the non-rutile portion may show breakdown in the form of mottling or bubbles, as seen here.
A lovely rosette surrounding a mica crystal decorates the interior of this ruby from Montepuez, Mozambique.
A lovely rosette surrounding a mica crystal decorates the interior of this ruby from Montepuez, Mozambique.
Rubies from some localities in northern Mozambique have fissures that are too wide to be closed via the normal flux healing treatment alone. Thus these stones also often have the fissures filled with glass, as you can see here. The glass has a much lower luster than the surrounding corundum. One can also see a round gas bubble that was cut through during the polishing process.
Rubies from some localities in northern Mozambique have fissures that are too wide to be closed via the normal flux healing treatment alone. Thus these stones also often have the fissures filled with glass, as you can see here. The glass has a much lower luster than the surrounding corundum. One can also see a round gas bubble that was cut through during the polishing process.
Rutile silk (high relief) with daughter crystals (lower relief) at the broad ends is a common feature of Mozambique rubies. Heat treatment often produces a breakdown, creating white spots or bubbles within the daughter crystals, as well as a rim developing on the outside edge, as seen here.
Rutile silk (high relief) with daughter crystals (lower relief) at the broad ends is a common feature of Mozambique rubies. Heat treatment often produces a breakdown, creating white spots or bubbles within the daughter crystals, as well as a rim developing on the outside edge, as seen here.
Rutile silk (high relief) with daughter crystals (lower relief) at the broad ends is a common feature of Mozambique rubies. Heat treatment often produces a breakdown, creating white spots or bubbles within the daughter crystals, as can be seen here.
Rutile silk (high relief) with daughter crystals (lower relief) at the broad ends is a common feature of Mozambique rubies. Heat treatment often produces a breakdown, creating white spots or bubbles within the daughter crystals, as can be seen here.

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Mozambique ruby inclusions may include mineral crystals, rutile silk, healed fissures, fluid inclusions, negative crystals, 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 ruby and evaluating a possible Mozambique origin.

Mozambique Ruby Inclusion Photomicrographs

The Hyperion Mozambique ruby gallery includes microscopic features documented in rubies from Mozambique. Each entry is accompanied by descriptive information and, where available, references to the gemological literature.

What Inclusions Can Reveal About Mozambique Ruby

Inclusions are an important part of geographic origin determination in ruby. Their form, composition, orientation and associations can provide evidence that, when considered together with other gemological properties, may support or contradict a Mozambique origin.

Hyperion combines inclusion photomicrography with supporting gemological information so that individual features can be compared with documented examples from Mozambique rubies.

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.