The Appeal of Non-Nacreous Pearls

Several vendors offered a variety of impressive non-nacreous pearls at the Tucson gem shows.

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Rainbow Rays in Rainbow Lattice Sunstone

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

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Exceptionally Rare Titanoholtite

A stone submitted as dumortierite is identified as rare titanoholtite in the Carlsbad laboratory.

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Patania Jewelry

A look at the diverse jewelry designs from four generations of the Patania family.

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Precious Opal from Pedro II, Brazil

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

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Blue Opal from Chile

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

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Rose Channels in Ruby

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

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Morganite from Blue Star Gems

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

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New High-Quality Rainbow Moonstone from Madagascar

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

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Iridescent Imitation Pearl

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

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Intarsia Jewelry Box by Nicolai Medvedev and Susan Helmich

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

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Historical Relics Repurposed into Jewelry

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

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Guatemalan Jadeite Jade: Rough and Finished

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

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Pink and Red Epidote in Quartz

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

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Large CVD-Grown Diamond Resubmitted after HPHT Treatment

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

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Trigon Party on a Diamond

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

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Electroformed Gold Bracelet

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

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Gemstones and Art

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

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An Exceptional Cat’s-Eye Emerald

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

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Tucson 2024 Overview

An overview of the 2024 Tucson gem shows.

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