Presents a detailed study of gemological properties, inclusion features, spectroscopic characteristics, and chemical composition of emeralds from this important source. Chronicles …

Get details on the latest research from the GIA research team, including: natural diamond geology and mining locations, causes of colors and optical features, laboratory-grown diamond …

Analysis of Gemstones at GIA Laboratories. GIA’s laboratories use advanced instrumentation and research to deliver accurate grading, identification, and origin determination for natural and …

Get all four 2020 issues — more than 500 pages of the most up-to-date information in gemology. See the individual 2020 issues for the articles in this volume year. Usually ships in 3-5 …

GIA students and alumni save 10% on back issues! Enter coupon code GGALUM at checkout. Usually ships in 3-5 business days. SKU: 4302004

Biểu đồ và bảng dưới đây tóm tắt lịch sử giá vàng tại Việt Nam trong năm 2020 theo ngày, tháng và đơn vị (ounce, gram và kilogram). Biểu đồ trên phản ánh giá vàng tại Việt Nam năm 2020. …

GIA. In early 2020, several of our campuses were closed due to mandates by local health officials and as best practice for the protection of our students and staff. We continue to offer …

Explores the art form of jade carving in China across five periods from the late Neolithic Age to the present day. Discusses the features of alkali elements and their influence on the color of blue …

The Supreme Award winner, Awards winners and Commendations were announced at the GIA Digital Design Awards Ceremony on Friday 27th of November 2020. We were delighted to …

GIA students and alumni save 10% on back issues! Enter coupon code GGALUM at checkout. Usually ships in 3-5 business days. SKU: 4302001