Summer 2017 - Volume 53, Issue 2
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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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Oil in ruby contrasts with gem’s bodycolor.
Oiled Ruby: A Remarkable Visual

A ruby’s surface-reaching cavity is filled with red oil.

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