Picturesque beaches and lush green jungles are not the only attractions that make Bali the most popular tourist destination in Indonesia.

Discusses the features of alkali elements and their influence on the color of blue to yellow beryl.

A rare Burmese star peridot cabochon is characterized by a soft four-rayed asterism and extremely fine acicular inclusions.

Advanced analytic techniques are critical for separating Ethiopian feldspar from Oregonian and copper-bearing feldspar with undetermined color origin.

Numerous needle-like inclusions exhibit vibrant interference colors in a suite of pallasitic peridot from the Jepara meteorite.

Chronicles developments at the Chivor emerald mine in Colombia between 1880 and 1925, based on archival records.

A transparent supply chain and the education of artisanal miners were two of the many topics discussed at Tucson’s first Ethical Gem Fair.

A ring made entirely of natural diamond was recently submitted to GIA’s New York laboratory.

Violent kimberlite eruptions impact the surface features of diamonds, which can give scientists useful information about how diamonds react with the fluids in the mantle.

A freely moving diamond crystal completely enclosed in a diamond from Siberia gets its name from the famous Russian nesting dolls.

Diamond formed at incredible depth shows evidence of radioactive fluids in cavities surrounded by green fluorescence halos.

Green nephrite deposits are found at many locations around the globe, with British Columbia, Siberia, and northwestern China as the leading producers.

A phenomenon resembling play-of-color was seen in a 4.13 ct unheated sapphire recently examined by the author.

Unusually large top-quality faceted Russian demantoid garnets with the characteristic lovely green to yellowish green color excite attention at the Tucson GJX show.

A delicate, ethereal necklace depicting a diamond butterfly caught in a gem-studded spider’s web won the third annual Gianmaria Buccellati Foundation student jewelry design contest.

Diamond inclusions are relatively common guests in diamond crystals.

The Hong Kong laboratory recently examined a Burmese star ruby incorporating a significant amount of bismuth glass.

Presents a quantitative means of determining the causes of color in a gem material, using corundum’s six major chromophores as an illustration.