Search Gemstone Knowledge
Gemstone Science
Dioptase's Revealing Surface: Why Bulk Chemistr...
Why dioptase's bulk properties are easier to measure than its surface history, and what that means when comparing natural and laboratory-grown material.
Dioptase's Revealing Surface: Why Bulk Chemistr...
Why dioptase's bulk properties are easier to measure than its surface history, and what that means when comparing natural and laboratory-grown material.
When the Spectrometer Looks Away: Reading Imper...
Why imperial topaz color, treatment history, and origin resist a single measurement, and how gemologists interpret partial instrumental evidence with appropriate uncertainty.
When the Spectrometer Looks Away: Reading Imper...
Why imperial topaz color, treatment history, and origin resist a single measurement, and how gemologists interpret partial instrumental evidence with appropriate uncertainty.
Irradiated Sunstone and the Quiet Problem of Co...
Radiation-induced color centers in sunstone feldspar can mimic natural coloration. Learn why laboratories reach different conclusions about irradiation treatment and where the evidence limits lie.
Irradiated Sunstone and the Quiet Problem of Co...
Radiation-induced color centers in sunstone feldspar can mimic natural coloration. Learn why laboratories reach different conclusions about irradiation treatment and where the evidence limits lie.
When Apophyllite Glows: Reading Luminescence Ev...
Apophyllite can fluoresce, but a single UV test cannot confirm identity, origin, or treatment. Learn how luminescence works in this variable mineral group and where interpretation must stop.
When Apophyllite Glows: Reading Luminescence Ev...
Apophyllite can fluoresce, but a single UV test cannot confirm identity, origin, or treatment. Learn how luminescence works in this variable mineral group and where interpretation must stop.
When a Stone Glows Softly: Scattering, Haze, an...
Translucent or milky synthetic spinel is a scattering problem, not a visual origin test. Learn how internal boundaries redirect light and why field observation needs laboratory evidence.
When a Stone Glows Softly: Scattering, Haze, an...
Translucent or milky synthetic spinel is a scattering problem, not a visual origin test. Learn how internal boundaries redirect light and why field observation needs laboratory evidence.
Reading Magnetite's Geologic History Through It...
How spectroscopy is used to study magnetite in deposit geology, what Raman and reflectance methods can reveal about composition and origin, and why a spectrum alone cannot prove a geological...
Reading Magnetite's Geologic History Through It...
How spectroscopy is used to study magnetite in deposit geology, what Raman and reflectance methods can reveal about composition and origin, and why a spectrum alone cannot prove a geological...