Irradiated and Annealed Blue Type Ia Diamond
Examination shows that a diamond was subjected to a multi-step process in order to introduce a blue color.
Jonathan Muyal Named Gem-A's Photographer of the Year
Carlsbad-based G&G contributor takes top honors in Gem-A's annual photography competition.
Fancy Deep Brown-Orange CVD Synthetic Diamond
Unusual Orange Pyrope-Spessartine-Grossular Garnet
A garnet proves to have a much higher grossular component than initially expected.
Six-Rayed Star in Sapphire from Myanmar
Color Origin of Phenakites from the Ural Emerald Mines
An investigation into jewelry-grade phenakite from Russia.
Fourth International Diamond School
A report from the fourth International Diamond School, held in January 2018 in Brixen-Bressanone, Italy.
Universal Microscope Upgrade Kit
A review of an upgrade kit that maximizes the use of a gemological microscope.
Finds from the Secondary Market
Dave Bindra shows some noteworthy pieces he obtained on the secondary market and shares his thoughts on the state of the colored stones market.
Multi-Generation Cutting Family from Idar-Oberstein
Alexander Arnoldi explains the strategy of Arnoldi International and provides an update on some new high-quality materials.