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Opal from Shewa, Ethiopia shows agate-like banding.
Opal with Agate-Like Banding

An orangy brown opal from Ethiopia displays a small patch of wavy "varve" banding, unusual for this type of gem.

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Night sky inclusion scene in Burmese star sapphire.
Six-Rayed Star in Sapphire from Myanmar

A Burmese sapphire shows a celestial scene both externally and internally.

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Type IIa diamond with etch channels caused by dissolution.
Type IIa Diamond with Extraordinary Etch Channels

Rare dissolution etch channels are seen in a natural diamond.

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This aquamarine crystal showed iridescence as it is turned under a moving light source.
Mysterious Iridescence in Aquamarine

A rough aquamarine crystal shows an unexpected phenomenon.

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LMR in diamond viewed with different illuminations.
Christmas Tree–Shaped Internal Feature In Diamond

A laser manufacturing remnant in a Fancy yellow diamond creates a unique specimen.

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The kyanite inclusion identifies the diamond as having an eclogitic origin.
Kyanite: A Rare Blue Guest in Diamond

An unexpected crystal within a diamond helps to identify the gemstone’s geologic origin.

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Quartz with abundance of inclusions.
Cosalite in Quartz

A rare mineral is found in a rock crystal quartz host.

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Hexagonal molybdenite crystals in phantom plane of quartz.
Quarterly Crystal: Molybdenite Phantoms in Quartz

Raman analysis identifies unusual inclusions in quartz.

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Sapphire with blue and white area and black inclusions.
Sapphires with Unusual Radial “Eye” Structure

Sapphires exhibiting radial structures are examined.

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Quartz hosting two chlorapatite crystals.
Chlorapatite in Quartz

A dichroic inclusion within a quartz crystal is found to be chlorapatite.

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