大切な方に贈るギフトをお探しですか？12月の誕生石は、その方が12月生まれでなくても、すべての方の好み、スタイル、個性にピッタリ合ったギフトとなります。

マリー・アントワネットの宝飾品の10点が、11月14日に行われたサザビーズのジュネーブオークションで王室のその他の宝石90点と共に驚異的な価格で落札されました。

自然は秋になると、鮮やかなパレットのように変わる木の葉の色や万華鏡のように色鮮やかな素晴らしい夕日を見せてくれます。

Lotus Gemology receives submissions of star stones on a regular basis, so when we first saw the specimen shown here, it appeared to be one among many of our usual stones to test.

An unusual assembled stone is examined at GIA’s New York lab.

Rare pearls, along with their shell, are studied in the Hong Kong lab.

The first known group of color-change gem-quality chrome grossular garnet, reportedly from Ethiopia, is examined in GIA’s Carlsbad lab.

A project coordinated by GIA and the NGO Pact provides a valuable educational tool to women miners in Tanzania.

A black star sapphire produced from eastern Thailand, showing both golden and silver rays, is studied at GIA’s Bangkok lab.

A look at the color zoning exhibited by the largest HPHT-treated blue diamond graded by GIA.

Gold: Vortex, Virtues, and Values was hosted by Initiatives in Art and Culture (IAC) at Bohemian National Hall in New York City, April 12–13. Now in its eighth year, the conference has become an annual industry gathering for those looking to evaluate the market, discover exceptional work, and discuss key gold-related issues.

Aesthetically pleasing inclusions are found in topaz from Pakistan’s Shigar Valley.

Projects developed by the GemHub to benefit miners, cutters, and others involved in the gem and jewelry industry.

For the first time, wurtzite is found as an inclusion in gem material.

Irradiated CVD-grown diamonds are examined in the Carlsbad lab.

A Medusa quartz from Paraíba, Brazil, hosts a surprising inclusion.

Over the last decade, the production methods used to create synthetic diamond melee have improved substantially, along with the quality of the specimens themselves.