Gemstone Science

Understanding Fire in Garnet: The Science of Dispersion in Demantoid and Other Radiant Garnets

Understanding Fire in Garnet: The Science of Di...

Explore the optical phenomenon of fire in garnet gemstones. Detailed guide to dispersion, refractive index, chemical composition (iron, chromium, vanadium), and geological origins affecting demantoid, tsavorite, spessartine, and hessonite. Perfect...

Understanding Fire in Garnet: The Science of Di...

Explore the optical phenomenon of fire in garnet gemstones. Detailed guide to dispersion, refractive index, chemical composition (iron, chromium, vanadium), and geological origins affecting demantoid, tsavorite, spessartine, and hessonite. Perfect...

Decoding the Star Effect in Gemstones: The Science of Asterism in Sapphire

Decoding the Star Effect in Gemstones: The Scie...

Learn how asterism forms in star sapphires through rutile silk inclusions, light reflection, and crystallography. Expert guide on identifying natural vs synthetic star sapphires with gemological tests.

Decoding the Star Effect in Gemstones: The Scie...

Learn how asterism forms in star sapphires through rutile silk inclusions, light reflection, and crystallography. Expert guide on identifying natural vs synthetic star sapphires with gemological tests.

What Causes the Schiller Effect in Labradorite? A Deep Dive into Gemstone Optical Phenomena

What Causes the Schiller Effect in Labradorite?...

Discover the science behind labradorescence, from exsolution lamellae and thin-film interference to gem identification and notable global deposits. A detailed gemological analysis.

What Causes the Schiller Effect in Labradorite?...

Discover the science behind labradorescence, from exsolution lamellae and thin-film interference to gem identification and notable global deposits. A detailed gemological analysis.

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.