Investigates the chemical, physical, and gemological properties of attractive rhodonite-rich rocks from this Swiss deposit.

Explores the art form of jade carving in China across five periods from the late Neolithic Age to the present day.

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

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

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

Orange crystal inclusion identified as the rare mineral triplite in a beryl from Pakistan.

The unusual six-rayed trapiche pattern, identified mainly with Muzo emeralds, has also been discovered in Mogok sapphires and Mong Hsu rubies.

A nondestructive rapid screening technique uses fluorescence spectroscopy to identify treated colored pearls.

Untreated Russian emeralds, rarely seen in the market, demonstrate a range of color and degree of fineness.

Mina Stones promotes Nigerian gems including rubellite and sapphire as well as reviving traditional skills and symbols in the creation of original jewelry.

Application of slight pressure perpendicular to the twinning planes reveals the unusual property of this synthetic gem.

On February 5, 2020, Gems & Gemology launched a Facebook group dedicated to gemology and research published in the journal.

Inclusions resembling snowflakes, and hues of many colors, are two characteristics seen in fine-quality jadeite specimens on offer at the Tucson gem show.

Chrysocolla-in-chalcedony, also known as gem silica or blue chalcedony in Taiwan, is the most valuable chalcedony variety on the Taiwanese market.

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

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.