GIA Museum’s “Paint the Town Ruby Red” Exhibit at TGMS
The GIA Museum’s exhibit at TGMS spotlights a Burmese ruby necklace to illustrate the role of chromium in fluorescence.
Grayish Blue CVD Diamond Colored by GR1 and SiV–
Examination of a grayish blue CVD laboratory-grown diamond indicates its color was caused by both the GR1 and SiV– centers.
Exceptionally Large Synthetic Rutile
The Carlsbad laboratory receives three large synthetic rutile brilliants, one of which is the largest encountered at GIA.
Heart-Shaped Golden South Sea Cultured Pearl
The remarkable use of an atypical bead nucleus to achieve the perfect heart shape suggests recent improvements in pearl culturing techniques.
Libyan Desert Glass Bangle Bracelet
The Hong Kong laboratory reports on Libyan Desert glass in the rare form of a bangle bracelet.
Cultured Pearl Market Update
A look at the latest cultured pearl trends and market updates from dealers at the AGTA show.
“Edison” Pearls: Increasing Market Presence
The increased popularity of “Edison” pearls was evident at the AGTA and GJX shows, with more colors and larger sizes available.
GIA Library Wins Exhibit Award at TGMS
GIA’s Richard T. Liddicoat Gemological Library and Information Center wins award for exhibit highlighting mercury-free gold mining at TGMS.
Vibrant Green Grossular Garnet “Transvaal Jade”
Grossular-andradite garnet stands out at the Pueblo show with a beautiful vibrant green color and high-polish luster.
Heated Purplish Pink Sapphire from Ilakaka (Madagascar) with Colored Monazite Inclusions
Orange-brown monazite inclusions in a purplish pink sapphire are analyzed for evidence of heat treatment.
Italian Precious Coral
A look at the Italian coral market and precious coral samples from the Mediterranean Sea.
Misfit Diamonds: Beauty in the Imperfect
Unusual diamonds with eye-visible inclusions are gaining popularity in the market.
Sean Hill: Exquisite Jewelry Designs
Former university professor Sean Hill shares some of his unique jewelry designs at the GJX show.
Synthetic Color-Change Wakefieldite
A report on the striking color-change behavior of the first faceted synthetic wakefieldite seen at GIA.
Bead Cultured Abalone Pearls from Chile
A study of abalone bead cultured pearls from a new pearl culturing technique tested in Chile.
Chromophore Behaviors (Including the 880 nm Absorption Band) in an Irradiated Pink Sapphire
A report showing the preliminary results of a radiation experiment with pink sapphire from Madagascar.
Spotlight on Natural Nacreous Pearls
Alex Vock shares his expertise on natural saltwater nacreous pearls.
Purple Anhydrite
The Carlsbad laboratory encounters its first example of a transparent purple faceted single crystal anhydrite.