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Research
Pitfalls in Color Grading Diamonds by Machine
Two major sources of error make spectroscopically determined color grades unreliable.
CVD Synthetic Diamond with Unstable Color Centers
Hematite Crystals in Diamond
Tiny hematite crystal inclusions identified along two fractures in natural diamond.
The Discovery of Davemaoite, the CaSiO3 Perovskite, in a Diamond from Earth’s Lower Mantle
Davemaoite identified in a diamond from Orapa, Botswana.
Chameleon Diamond with Nickel Absorption Band
Modern Diamond Cutting and Polishing
Over the last 25 years, the diamond-cutting industry worldwide has been revolutionized by sophisticated instruments that provide invaluable aid in the process of creating a polished gem.
A Preliminary Gemological Study of Synthetic Diamond Thin Films
Online Diamond Sales 17% of U.S. Market
According to a recent De Beers study, online sales of diamond jewelry comprise about 17% of the market in the U.S.
Natural Colorless Type IaB Diamond with Silicon-Vacancy Defect Center
Examination revealed a rare instance of a silicon-vacancy defect in natural diamond.
Rare Type IIb Gray-Purple Diamond
A natural type IIb diamond with rare color and very strong 776.4 nm PL peak is seen at the Carlsbad lab.
Diamond-Bearing Eclogite Xenoliths from the Ardo So Ver Dykes
Mineralogical examination of diamond-bearing material from South Africa reveals the specimens to be eclogite xenoliths.
Legal Protection for Proprietary Diamond Cuts
Considerable confusion exists in the trade about the important differences between trademarks and patents.
