Compares the image quality provided by real-time microradiographic imaging (RTX) units fitted with two different detectors: an image intensifier (II) and a flat panel detector (FPD).

A look at the artistic heritage of the Drehers, an influential family of gem carvers in Idar-Oberstein, Germany.

Microscopic observation and trace element analysis is performed on rubies from Longido.

一支抒情的舞蹈：时而一个大踢腿，大胆闪烁着丰富的色彩，时而是细碎的舞步，闪现出星星点点的光芒。

尽管买家的鉴识能力越来越强，但在 2017 年的拍卖中，买家们仍然购买了价值 11 亿美元的特别高端钻石、彩色宝石和珠宝。

Suggested Reading on Rubies and Their Inclusions

The rigors and often-harrowing conditions of gemology field expeditions are no match for 30-year Marine veteran with a love of gems.

Surface-reaching growth tubes in a sapphire provide insight into the gem’s origin and treatment history.

A fluorite specimen hosts two eye-visible, prominent white barite inclusions.

Discusses the mineralogical composition and provenance of this spotted decorative gemstone.

Details the process used by Wiede’s Carbidwerk to produce star synthetic corundum from the mid-1950s through the 1970s.

Garnets with a unique color and a previously unreported chemical composition are examined at GIA’s Carlsbad lab.

Summarizes statistical data and distinctive features of several thousand gem-quality HPHT synthetic diamonds examined by GIA from 2007 through 2016.

Current activity and production at various sites around Mozambique are reported.

Compares PL spectroscopy data of 48 emerald samples from three countries to evaluate the usefulness of the technique in geographic origin determination.

A growth blockage/fluid inclusion combination in a blue sapphire from Sri Lanka resembles a bloom in a rainstorm.

A quartz cabochon hosts an unusual rose-shaped hematite inclusion.

Examines 85 saltwater natural pearls, reportedly harvested from the Caribbean islands off the coast of Venezuela during the early 16th century, to determine their age.