News

Spiral structure in a Colombian emerald
Synthetic diamonds certification
Insight

Synthetic diamonds certification at GGTL Labratories Switzerland

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A non-copper-bearing elbaite tourmaline
Publication

Throwback to a remarkable non-copper-bearing elbaite tourmaline

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Synthetic rhodochrosite.
Micrographs

Synthetic rhodochrosite

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a tungsten carbide mortars
Insight

Introducing Tungsten carbide mortars

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Synthetic diamonds bag
Insight

Lab-grown or synthetic diamonds: what does the law say?

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Properties and Colouration of Orange Hackmanite from Afghanistan
Publication

Properties and Colouration of Orange Hackmanite from Afghanistan

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“petrified” freshwater crab (Potamos potamois, Olivier, 1804).⁠ ⁠
Publication

“petrified” freshwater crab

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Three-phase digitated inclusion in an emerald from Malipo, China
Micrographs

Three-phase digitated inclusion in an emerald from Malipo, China

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Madagascar’s tree
Insight

Gemstones and Human Adventure: A Journey Through Madagascar’s Mines

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Zircon dramatically altered by high-temperature treatment
Micrographs

Zircon dramatically altered by high-temperature treatment

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dioptase
Insight

Dioptase: a deceptive green with emerald-like reflections

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Hydrogen-rich diamonds
Micrographs

Hydrogen-rich diamonds: rare crystals with star-like zoning

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