Search Gemstone Knowledge
Gemstone Science
Jet: How Porosity and Hydration Shape an Organi...
A scientific look at jet as a porous, moisture-bearing organic gem material: how coalification, porosity, and hydration shape its surface, working behavior, and identification limits.
Jet: How Porosity and Hydration Shape an Organi...
A scientific look at jet as a porous, moisture-bearing organic gem material: how coalification, porosity, and hydration shape its surface, working behavior, and identification limits.
Reading Order in Orthoclase: Why Interference, ...
How orthoclase and related feldspars produce interference, diffraction, and scattering effects, and why synthetic detection needs a multi-method evidence chain rather than one optical clue.
Reading Order in Orthoclase: Why Interference, ...
How orthoclase and related feldspars produce interference, diffraction, and scattering effects, and why synthetic detection needs a multi-method evidence chain rather than one optical clue.
Coated Topaz and the Optics of a Very Thin Layer
How a thin interference coating on topaz produces color while complicating refractive index and birefringence readings, and why layered optical measurements need scale-aware interpretation.
Coated Topaz and the Optics of a Very Thin Layer
How a thin interference coating on topaz produces color while complicating refractive index and birefringence readings, and why layered optical measurements need scale-aware interpretation.
What Stabilization Actually Adds to Turquoise, ...
A close look at how polymer stabilization changes turquoise physically and optically, what spectroscopy and microscopy can establish, and where interpretation stays uncertain.
What Stabilization Actually Adds to Turquoise, ...
A close look at how polymer stabilization changes turquoise physically and optically, what spectroscopy and microscopy can establish, and where interpretation stays uncertain.
Orientation, Geometry, and the Case Against Sin...
Why a single refractive-index reading is unreliable for identifying YAG: isotropy, facet geometry, sampling depth, strain, and how corroborating measurements build an evidence chain.
Orientation, Geometry, and the Case Against Sin...
Why a single refractive-index reading is unreliable for identifying YAG: isotropy, facet geometry, sampling depth, strain, and how corroborating measurements build an evidence chain.
Seeing the Scaffolding: How Flux-Grown Emerald ...
How flux-grown emerald can produce interference colors from internal growth layers, why diffraction is often misapplied, and what these optical effects can and cannot establish about synthetic origin.
Seeing the Scaffolding: How Flux-Grown Emerald ...
How flux-grown emerald can produce interference colors from internal growth layers, why diffraction is often misapplied, and what these optical effects can and cannot establish about synthetic origin.