An Update on Sapphires with Unstable Color
Crystal inclusions in a natural diamond resemble a unique scene.
GIA 团队与 Alan Revere（阿兰·里维尔）合作改进研究珠宝学家 (Graduate Jeweler) 课程
作为宝石学教育、研究以及以科学为基础的宝石鉴定与分级服务方面的领导者，GIA 与金匠大师兼备受赞誉的珠宝设计师 Alan Revere（阿兰·里维尔）开展合作，以期改进 GIA 的研究珠宝学家 (Graduate Jeweler) 课程。
GIA 研究人员展示新发现
11 月 1 日至 3 日，美国宝石研究院在加州卡尔斯巴德的 GIA 全球总部召开第 16 届年度研究会，100 名 GIA 研究员、知名学者、独立行业专家以及 GIA 理事和高管通过现场和虚拟参会。
Cat’s-Eye Paraíba Tourmaline with Copper Inclusions
The Tokyo laboratory examines a Paraíba tourmaline with chatoyancy caused by copper inclusions.
Fraudulently Inscribed Synthetic Moissanite
The Mumbai laboratory finds a fraudulent GIA inscription on synthetic moissanite.
Unusual Purple Fluid in Quartz
Numerous negative crystals in a pear-shaped quartz host brightly colored purple liquid.
Color Mechanism and Spectroscopic Thermal Variation of Pink Spinel Reportedly from Kuh-i-Lal, Tajikistan
A detailed spectroscopic investigation of the color of pink spinel reportedly from the Kuh-i-Lal deposit in the Pamir Mountains of Tajikistan.
Gems on Canvas: Pigments Historically Sourced from Gem Materials
Explores the use of gem materials as pigments in works of art, from the earliest cave paintings to the modern era.
Gemological Characteristics of Low-Temperature “Gel-Filled” Turquoise
A report on the examination of “gel-filled” turquoise produced in Zhushan County in Hubai Province, China.
Hidden Gems at the San Diego Natural History Museum
Each level of the vertical Hidden Gems exhibit offers a different theme at the San Diego Natural History Museum.
Inaugural Turquoise United Conference
A report on the first-ever Turquoise United conference in Albuquerque, New Mexico.
Pressed Amber Imitation for “Root Amber”
An examination of a beaded bracelet reveals calcite powder to enhance the imitation of natural root amber.
Synthetic Sapphire with Rose Channels
Rose channels and twinning planes are observed in light purplish blue synthetic corundum.
The Year of Mineralogy at the Perot Museum
The Perot Museum of Nature and Science promotes public interest in mineral studies with The Year of Mineralogy exhibit.
Update from Mozambique’s Ruby Mines
A field gemology team from GIA provides an update on the ruby mining operations around Montepuez.
Methods and Challenges of Establishing the Geographic Origin of Diamonds
Examines the current available means of determining the geographic origin of gem-quality diamond, which are based largely on trace element and isotopic characteristics. For now, no method exists for determining the provenance of a random individual diamond.
The Liquids Lurking Inside Your Diamonds
Examines the variety of fluid inclusions contained within diamond, which reflect the natural processes that created and modified these gems deep within the earth’s mantle.
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