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.

The source of color in some diamonds, particularly fluorescent green and some yellow stones, can be very difficult to identify despite increasing knowledge about the radiation-related bands seen in the visible spectra of diamonds.

A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.

Synthetic nano-polycrystalline diamond is one of the latest and most exciting results of scientific efforts to synthesize a mineral that has held the fascination of humankind for ages.

A new mineral, johnkoivualite, named after prominent GIA gemologist and photomicrographer.

Eternity Natural Emerald utilizes emerald sourced from Afghanistan to provide calibrated sets ranging from all quality levels and price points.

New imitation opal displays pronounced play-of-color phenomenon in a unique pattern covering large surface areas.

A very rare faceted “snow stone” was recently encountered in the Carlsbad laboratory.

A rare faceted vlasovite is encountered for the first time at the Carlsbad laboratory.

A decorated dislocation chain encountered in Oregon sunstone follows an interesting rectangular pattern.

Raman analysis helps to confirm the identification of a rare and lovely large blue spodumene.

A gem cutter’s thoughtful design enhances the natural color zoning in an 8.55 ct alexandrite.

A Sri Lankan star sapphire delights with an apatite crystal floating over a cloud of rutile silk.

Fluid inclusions resembling a snake and a fish are discovered in two rubies from the Yuanjiang deposit in China.