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Amethyst with a large aqueous primary fluid inclusion
Large Aqueous Primary Fluid Inclusion in Amethyst

A strikingly large primary fluid inclusion with a gas bubble was seen in a Moroccan amethyst.

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Composite Amber with an Unusual Structure

This 9.12 gram amber composite featured a combination of natural and imitation amber, accompanied by natural and artificial insect inclusions.

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Newly recognized mineral crowningshieldite in a diamond sample
Crowningshieldite: A New Mineral

A newly discovered mineral, crowningshieldite, was accepted on September 18, 2018, by the International Mineralogical Association.

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Demantoid crystal with two-phase fluid inclusion
Demantoid Garnet with Giant Fluid Inclusion

A large fluid inclusion within a demantoid garnet from Madagascar provides insight into the source’s mineralization.

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Garnet Crystal Inclusion Photomicrograph
Color-Change Garnet in Diamond

This diamond contained an inclusion of pyrope-spessartine garnet that appeared grayish green in fluorescent light and purplish red in incandescent light.

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Russian demantoids with pure color and horsetail inclusions
Update on Russian Demantoid Production

Alexey Burlakov shares insights on the current production of Russian demantoid and emeralds.

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Emerald cabochon with six-rayed star.
Large Star Emerald

An emerald reportedly from Madagascar is cut to show asterism, a rare phenomenon in this material.

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Quartz cabochons with cross-shaped quartz inclusions.
Rare “Star and Cross” Quartz from Brazil

Two quartz specimens showing asterism and cross-shaped inclusions are analyzed.

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An Interesting Rose Quartz from Madagascar

A new find of rose quartz from Madagascar contained some unusual inclusions.

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Bismuthinite Inclusions in Rose Quartz from Madagascar

Eye-visible inclusions are common in almost all quartz varieties except rose quartz.

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