Inclusions

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Rain Aquamarine hollow tube like inclusions

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Back 2

Rose quartz 6 ray asterism (diasterism) caused by dumortierite inclusions

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Rose quartz cloudy patches feathers & fractures

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Amethyst tiger strips ribbon-like rows of partial healing along twinning planes which appear black in dark-filled lighting

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Amethyst Beetles legs inclusions thought to be goethite

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Bloodstone red spots of iron oxide

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Centipede inclusions result from stress cracks between the intergrown alternating layers of albite and orthoclase feldspar

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Grey labradorite has metalic looking needles (magnetite) in 3 directions along with dark crystals (ilmenite).

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Sunstone Lots of small goethite or hematite plates witch may be hexagonal, sometimes transparent, often parallel to one plane.

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Oregon sunstone may contain strongly orientated copper platelet inclusions which can cause a spangled effect

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Amazonite structure pearly luster

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Back 12

Tourmaline thread like cavities

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Peridot. Black chromite crystals which induce flat stress cracks aka Lily pads

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Peridot. Black chromite

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Peridot. Mica flakes may give stone a brown hue.

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Peridot. Ludwigite hair / rod like typically in stones from Pakistan

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Prehnite. Epidote

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Obsidian. Cristallites

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Moldavite. Swirls

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Two phase inclusion in quartz gas and liquid

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Three phase inclusion liquid, gas and solid in an emerald

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Colour zoning in sapphires

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Monophase solid inclusion - rutile inclusions in sapphire also called silk

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Bamboo Actinolite crystals resembling the shape of bamboo in emerald

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Liquid fingerprint inclusion in un-treated Burmese blue

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Horsetail or ponytail chrysotile, which is a type of asbestos. These fibers radiate out from a very small crystal of chromite.

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Sun spangel in heat treated amber

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Two-phases inclusions. Trichites. Colored growth tubes in Pink Tourmaline

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Tremolite inclusions in sandawana emerald from Zimbabwe

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Black manganese in moss agate.

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Green chlorite in moss agate.

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Red iron oxide in moss agate