ADVERTISEMENTS

Gemstone Science

Reading Inclusions Against Their Matrix: How Boulder Opal Complicates the Diagnostic Rule

Reading Inclusions Against Their Matrix: How Bo...

Boulder opal is a natural composite of precious opal and ironstone host. This article explains how the host rock complicates inclusion interpretation, measurement, and treatment reasoning.

Reading Inclusions Against Their Matrix: How Bo...

Boulder opal is a natural composite of precious opal and ironstone host. This article explains how the host rock complicates inclusion interpretation, measurement, and treatment reasoning.

Repeatability Is Not Truth: Reading Diamond Evidence Through Analytical Layers

Repeatability Is Not Truth: Reading Diamond Evi...

Why identical diamond readings can still support different conclusions. A rigorous look at spectroscopy, growth structures, reference libraries, and the limits of analytical inference in diamond testing.

Repeatability Is Not Truth: Reading Diamond Evi...

Why identical diamond readings can still support different conclusions. A rigorous look at spectroscopy, growth structures, reference libraries, and the limits of analytical inference in diamond testing.

Kornerupine Under the Lamp: What Non-Destructive Testing Can and Cannot Reveal About a Stone That Has Been Changed

Kornerupine Under the Lamp: What Non-Destructiv...

How non-destructive gemological methods interpret kornerupine: the limits of refractive index, Raman, microscopy, and elemental analysis when distinguishing natural variation, treatment, and simulants.

Kornerupine Under the Lamp: What Non-Destructiv...

How non-destructive gemological methods interpret kornerupine: the limits of refractive index, Raman, microscopy, and elemental analysis when distinguishing natural variation, treatment, and simulants.

Malachite's Hidden Architecture: How Water, Pores, and Fibrous Growth Shape a Mineral's Behavior

Malachite's Hidden Architecture: How Water, Por...

How structural water, fibrous growth, and porosity shape malachite's properties, including hardness limits, treatment potential, and interpretation of its green color.

Malachite's Hidden Architecture: How Water, Por...

How structural water, fibrous growth, and porosity shape malachite's properties, including hardness limits, treatment potential, and interpretation of its green color.

Why Strontium Titanate Can Impersonate a Diamond Without Being One

Why Strontium Titanate Can Impersonate a Diamon...

Strontium titanate can mimic diamond's brilliance and fire despite different chemistry and structure. Learn why high refraction and dispersion create visual similarity and how gemologists separate the two.

Why Strontium Titanate Can Impersonate a Diamon...

Strontium titanate can mimic diamond's brilliance and fire despite different chemistry and structure. Learn why high refraction and dispersion create visual similarity and how gemologists separate the two.

When Crystal Growth Leaves a Signature: Reading Growth History in Synthetic Diamond and the Limits of Comparison with Larimar

When Crystal Growth Leaves a Signature: Reading...

A mineral-physics look at how HPHT and CVD diamond growth leaves diagnostic signatures, why spectroscopy has limits, and what larimar's geological formation can teach about interpreting growth records.

When Crystal Growth Leaves a Signature: Reading...

A mineral-physics look at how HPHT and CVD diamond growth leaves diagnostic signatures, why spectroscopy has limits, and what larimar's geological formation can teach about interpreting growth records.