Research Article Search Results
Inside De Beers’ Lightbox Diamonds
GIA researcher analyzes and confirms that De Beers’ Lightbox diamonds are grown using the chemical vapor deposition process.
The Very Deep Origin of the World’s Biggest Diamonds
Explores an exceptional family of diamonds, referred to as “CLIPPIR” (Cullinan-like, Large, Inclusion-Poor, Pure, Irregular, and Resorbed), that formed in a superdeep environment.
Filled Pearl with Surface Features
A pearl, thought to be natural, is revealed to be a bead-cultured specimen with a pre-drilled nucleus.
Accurate Reporting of Key Trace Elements in Ruby and Sapphire Using Matrix-Matched Standards
Presents a group of corundum standards developed by GIA to improve the accuracy and efficiency of its laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) instruments.
Two Unusual Natural Sapphires with Synthetic Ruby Overgrowth
For the first time, the Carlsbad and New York labs see natural sapphire seeds with synthetic ruby overgrowth.
Real-Time Microradiography of Pearls: A Comparison Between Detectors
Compares the image quality provided by real-time microradiographic imaging (RTX) units fitted with two different detectors: an image intensifier (II) and a flat panel detector (FPD).
Data Supplement
Compares the image quality provided by real-time microradiographic imaging (RTX) units fitted with two different detectors: an image intensifier (II) and a flat panel detector (FPD).
Chart: Inclusions in Natural, Synthetic, and Treated Ruby
Provides a visual guide to the internal features of natural, synthetic, and treated rubies.
Akoya Cultured Pearl Farming in Eastern Australia
Characterizes the akoya cultured pearls produced on the eastern shoreline of Australia using native Pinctada imbricata fucata mollusks.
Preliminary Observations on Facet-Grade Ruby from Longido, Tanzania
Microscopic observation and trace element analysis is performed on rubies from Longido.
Suggested Reading on Rubies and Their Inclusions
Suggested Reading on Rubies and Their Inclusions
30-Year Marine Corps Veteran Fulfills Dream of Becoming a Field Gemologist
The rigors and often-harrowing conditions of gemology field expeditions are no match for 30-year Marine veteran with a love of gems.
