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Gemstone Science

How Does Electron Spin Resonance Spectroscopy Unmask Colorless, Irradiated Diamonds?

How Does Electron Spin Resonance Spectroscopy U...

Learn how electron spin resonance (ESR) spectroscopy identifies artificial irradiation in colorless diamonds by measuring paramagnetic defects. A detailed guide for gemologists on interpreting ESR spectra, g-factor signals, and distinguishing...

How Does Electron Spin Resonance Spectroscopy U...

Learn how electron spin resonance (ESR) spectroscopy identifies artificial irradiation in colorless diamonds by measuring paramagnetic defects. A detailed guide for gemologists on interpreting ESR spectra, g-factor signals, and distinguishing...

How Does Tsavorite Garnet Form in the Metamorphic Belts of East Africa? A Gemological Deep Dive

How Does Tsavorite Garnet Form in the Metamorph...

Learn how tsavorite garnet forms in the metamorphic belts of Kenya and Tanzania. Discover key gemological properties, formation processes, and identification techniques for this rare green gemstone.

How Does Tsavorite Garnet Form in the Metamorph...

Learn how tsavorite garnet forms in the metamorphic belts of Kenya and Tanzania. Discover key gemological properties, formation processes, and identification techniques for this rare green gemstone.

Why Do Some Moonstones Exhibit Adularescence While Others Show Labradorescence? A Mineralogical Explanation

Why Do Some Moonstones Exhibit Adularescence Wh...

Discover why moonstone shows a blue glow while labradorite flashes spectral colors. Learn about exsolution lamellae, feldspar crystallography, and the science behind these gemstone phenomena.

Why Do Some Moonstones Exhibit Adularescence Wh...

Discover why moonstone shows a blue glow while labradorite flashes spectral colors. Learn about exsolution lamellae, feldspar crystallography, and the science behind these gemstone phenomena.

The Science of Asterism in Star Sapphires: Formation, Optics, and Identification

The Science of Asterism in Star Sapphires: Form...

Learn how asterism forms in star sapphires and rubies through oriented rutile inclusions. Discover optical principles, identification methods, and treatments for asteriated gemstones. Expert gemological insights.

The Science of Asterism in Star Sapphires: Form...

Learn how asterism forms in star sapphires and rubies through oriented rutile inclusions. Discover optical principles, identification methods, and treatments for asteriated gemstones. Expert gemological insights.

How Do Aragonite and Calcite Differ in Crystal Structure and Gemological Properties?

How Do Aragonite and Calcite Differ in Crystal ...

Discover how aragonite and calcite differ as polymorphs of calcium carbonate. Learn about their crystal systems, birefringence, hardness, and identification techniques for gemologists and collectors.

How Do Aragonite and Calcite Differ in Crystal ...

Discover how aragonite and calcite differ as polymorphs of calcium carbonate. Learn about their crystal systems, birefringence, hardness, and identification techniques for gemologists and collectors.

How to Identify Natural Spinel vs. Synthetic Spinel Using Advanced Gemological Testing Methods

How to Identify Natural Spinel vs. Synthetic Sp...

Learn how to identify natural spinel from synthetic using refractive index, UV fluorescence, spectroscopy, and inclusion analysis. In-depth guide for gemologists covering Verneuil process, pleochroism, and trace element testing.

How to Identify Natural Spinel vs. Synthetic Sp...

Learn how to identify natural spinel from synthetic using refractive index, UV fluorescence, spectroscopy, and inclusion analysis. In-depth guide for gemologists covering Verneuil process, pleochroism, and trace element testing.