George Frederick Kunz（ジョージ·フレデリック·クンツ） クンツァイトは、カラーストーンの中では比較的新しい宝石でです。 伝えられているところによれば、まだ 正体不明のピンクの水晶の標本は、カリフォルニア州のサンディエゴ郡で発見され ...

Diamond is available in a range of sizes and qualities to fit every consumer's tastes. One of the first things most people learn about diamonds is that not all diamonds are created equal. In fact, ...

New York is one of the world’s media, financial, entertainment, and fashion capitals. It’s home to the iconic landmarks like Wall Street and the Statue of Liberty, and to edgy artist enclaves like the ...

An aquamarine crystal in its natural state shows why these specimens are prized for their beauty. - Courtesy Daniel Trinchillo, Fine Minerals International Aquamarine is the green-blue to blue variety ...

This 5.30-carat emerald from Brazil has a slightly bluish green color. Courtesy John Parrish, courtesy African, Brazilian, Colombian Gems Incorporated. Emerald has many special qualities, but colored ...

However gem quality diamonds are fashioned from the original crystal shape they possess a combination of brightness, sparkle, fire, and sense of purity not matched by other gems. - Jeff Scovil, ...

As a consumer, you will regularly encounter in the marketplace gems that have been treated to change their appearance. A topic that often comes up is whether a particular gemstone is or isn’t treated.

在这个短片中，您将跟随 GIA 实地宝石学家 Vincent Pardieu（文森特·帕迪乌）及其团队一同游览马达加斯加 Ilakaka（伊拉卡卡）的蓝宝石矿区。 Ilakaka（伊拉卡卡）区位于马达加斯加岛南部，是世界上最大且目前最活跃的蓝宝石矿床之一。 潜在的蓝宝石矿床占地约 ...

Consumers know diamond from the slogan “A Diamond is Forever”. With some care considerations this is relatively true. The Asscher cut was popular decades ago and is again a very popular cut style.

这颗克什米尔蓝宝石拥有强烈的天鹅绒般蓝色。——摄影：Robert Weldon（罗伯特·韦尔登）/GIA。 蓝宝石是有色宝石三巨头之一，另外两种是红宝石和祖母绿。人们把这种坚固的宝石定为九月生日石，它以实用性和浪漫气息吸引了众多珠宝买家。 红宝石和蓝宝石均 ...

The green turquoise cabochon, from an American mine, might become part of a designer’s unique jewelry piece. The even blue color of the cabochon on the right would be called “Persian blue” in the ...

Reviews the advancements and major trends in laboratory-grown diamonds observed by GIA since 2007. Gemological and Trace Element Characteristics of Cassiterite from Yunling, China Examines gem-quality ...