A dramatic color change is observed in a hackmanite sample with an apatite inclusion.

Examination of a sapphire reveals negative crystals arrayed in an arrow-like pattern.

Various inclusion types are observed in a bright orangy yellow chondrodite.

Examination of alexandrite reveals three phases of matter within a single inclusion suite.

A study of abalone bead cultured pearls from a new pearl culturing technique tested in Chile.

A report showing the preliminary results of a radiation experiment with pink sapphire from Madagascar.

Alex Vock shares his expertise on natural saltwater nacreous pearls.

The Carlsbad laboratory encounters its first example of a transparent purple faceted single crystal anhydrite.

A look at the latest cultured pearl trends and market updates from dealers at the AGTA show.

The increased popularity of “Edison” pearls was evident at the AGTA and GJX shows, with more colors and larger sizes available.

GIA’s Richard T. Liddicoat Gemological Library and Information Center wins award for exhibit highlighting mercury-free gold mining at TGMS.

Grossular-andradite garnet stands out at the Pueblo show with a beautiful vibrant green color and high-polish luster.

Orange-brown monazite inclusions in a purplish pink sapphire are analyzed for evidence of heat treatment.

A look at the Italian coral market and precious coral samples from the Mediterranean Sea.

Unusual diamonds with eye-visible inclusions are gaining popularity in the market.

Former university professor Sean Hill shares some of his unique jewelry designs at the GJX show.

A report on the striking color-change behavior of the first faceted synthetic wakefieldite seen at GIA.

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