Colorful rays of light are observed in an Australian rainbow lattice sunstone.

A look at the variety of rough and finished Brazilian opal offered by Prime Gems at the GJX show.

An ocean blue variety of opal from Chile was introduced at the 22nd Street show in Tucson.

An extraordinary 236.27 ct morganite from Madagascar stands out at the GJX show.

Examination of a pear-shaped ruby reveals hollow Rose channels.

A new type of transparent moonstone seen in Tucson displays a distinct orange flash effect.

Opening day at the AGTA GemFair included the unveiling of the “Treasure Chest II with Blue Boy” intarsia jewelry box.

A brown oval specimen submitted to the Bangkok laboratory resembles a pen pearl at first glance.

Several jewelry designs incorporated historical artifacts at the Tucson gem shows.

A wide range of Guatemalan jadeite jade in blue, green, and lavender hues was offered at the 22nd Street show in Tucson.

A record holder for largest CVD-grown diamond is examined for a second time in the Carlsbad laboratory after HPHT treatment.

“Firework” sprays of hot pink to red epidote crystals are discovered in two rock crystal quartz cabochons.

A visit to the Tucson Fine Mineral Gallery uncovers impressive gemstone-related artwork.

Examination of gold bracelet bearing a 14K hallmark reveals a wax or resin material under gold plating.

A cluster of trigons is observed on the surface of a 1.01 ct natural diamond.

A double cabochon cat’s-eye emerald conjures fond memories for an estate dealer in Tucson.

An overview of the 2024 Tucson gem shows.

Explores the journey of superdeep diamonds to the earth’s surface.

Provides a basis for analyzing colored coatings on a variety of polished gemstones.

Characterizes a translucent variety of jadeite jade from the Morales mine in Guatemala.