Translucent Ruby Filled with Zinc Glass
Examination of a heart-shaped ruby reveals a zinc glass filler.
Solid Laboratory-Grown Single-Crystal Diamond Ring
The quality and size of this 4.04 ct CVD-grown diamond ring demonstrate the advancing technology in laboratory-grown diamonds.
Etch Features Reveal the Morphology of Diamond
Trigons and tetragons observed in a chameleon diamond indicate both octahedral and cubic growth.
CVD “Etch” Channel
The first report of an etch channel–like structure in a CVD laboratory-grown diamond submitted to GIA.
CVD-Grown Diamond with Few Diagnostic Features
A CVD-grown diamond submitted to GIA requires very careful examination to determine its origin.
Natural Diamond with Unusual Phosphorescence
A rare observation of spatially distinct red and greenish blue phosphorescence in a natural diamond.
Natural Type IIa Diamond with Unusual Red Fluorescence Distribution
“Nebula” Inclusion in Ruby Beryllium-Diffused to Heal Fractures
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