Ethical Gem Fair

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

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Saltwater Bead Cultured Pearl with Laminated Nucleus

The Bangkok laboratory recently examined a pearl containing a laminated shell bead nucleus with mysterious properties.

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Trapiche Gems

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

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Third Annual Gianmaria Buccellati Foundation Award Winner

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.

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Large and Fine Demantoid from Russia

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

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Nephrite Jade from Multiple Sources

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

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Carvings from Bali

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

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Dyed Chalcedony Imitation of Chrysocolla-in-Chalcedony

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

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Fine-Quality Jadeite Jewelry

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

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G&G Launches Facebook Group

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

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Nigerian Gems and Jewelry

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

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Russian Emerald

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

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Fluorescence Spectroscopy for Colored Pearl Treatment Screening

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

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Gem Carvings, Fantasy Cuts, and Master Recutting

This year at the AGTA show, the number of booths selling skillfully carved, fantasy cut, or expertly recut items was noticeably higher than in past years.

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Tucson 2020 Overview

In early February, despite the early phase of the COVID-19 outbreak, the Tucson shows were well attended and sales were brisk.

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歴史リーディングリスト:カリナンダイヤモンド

カリナンダイヤモンドにまとめられたコメント付きのリーディングリスト

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歴史的書籍リスト:ベニトアイト — カリフォルニアの州宝石

ベニトアイトに関して編集された注釈付きの書籍リスト

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新型コロナウイルスと闘う医療従事者を支援するために「名誉勲章」のピンをジュエラーが制作

GIAの卒業生、Franco Valobraが、命を救うために新型コロナウイルスと最前線で闘う医療従事者に感謝の気持ちを表して記念のピンを制作します。

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Atypical Bead Cultured Pinctada maxima Pearls Nucleated with Freshwater Non-Bead Cultured Pearls

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GIA図書館の電子書籍トップ10

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