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Diamond with Coesite Inclusions
Coesite Inclusions with Filaments in Diamond

Inclusions with unusual formation are found in a treated Fancy Vivid yellow diamond.

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Fancy pink brown diamond
Diamond Inclusion with Radiation Halo

A diamond’s inclusion, with a radiation stain shaped like a halo, is found to be monazite.

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Fancy brownish greenish yellow diamond with octahedral-shaped inclusion.
Graphite Inclusions Forming Octahedral Outline in Diamond

An inclusion outlined by minute graphite crystals within a diamond create an octahedral shape.

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Dark pink-purple spinel
Spinel Inclusion in Spinel

Examination of a pink-purple spinel revealed what appeared to be a spinel crystal inclusion.

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0.34 ct CVD synthetic
CVD Synthetic Diamond with Unusual Inclusions

Examination of a CVD synthetic diamond with an unusual pattern of growth dislocations that resemble natural inclusions.

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Yellow Diamond
Xenotime Inclusion in Yellow Diamond

Presents what is believed to be the first report of a xenotime inclusion in gem-quality diamond.

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Diamond with High Concentration of Nickel

Analysis of Fancy Light greenish yellow diamond leads to detection of nickel, as well as an inclusion that gives a color-change effect.

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Fish-Like Inclusion Found in Fancy Yellow "Cape" Diamond

A recent lab examination at GIA New York revealed an inclusion in a rectangular Fancy Yellow called "pareidolia," which means it was a resemblance of the scales and form of a fish.

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Unusual Curved Color Zoning In Emerald

A report on a 1.17 ct emerald obtained in Kabul, Afghanistan for GIA's permanent reference collection

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Diamond with concentric octahedral growth layers.
Diamond with Concentric Inclusions

A fancy-color diamond shows inclusions that outline growth layers.

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