Resultado da Busca
Há 4 dias · A Tradition Of Science and Education. Established in 1931, the Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading source of knowledge, standards, and education in gems and jewelry.
- Professional Gem Education | Gemology School – GIA
We offer the finest gem and jewelry education in the world...
- Professional Gem Education | Gemology School – GIA
3 de mai. de 2024 · Gems & Gemology Challenge. The spring issue also offers the 2024 Gems & Gemology Challenge quiz. Score 75% or better and you’ll receive a certificate of completion; earn a perfect score and your name will be listed in the Fall 2024 issue. Entries for the Challenge must be submitted online by September 1, 2024. About the Author.
Há 6 dias · Diamond Color. The color evaluation of most gem-quality diamonds is based on the absence of color. A chemically pure and structurally perfect diamond has no hue, like a drop of pure water, and consequently, a higher value. GIA's D-to-Z color-grading system measures the degree of colorlessness by comparing a stone under controlled lighting and ...
Há 1 dia · The GIA Clarity Scale has 6 categories, some of which are divided for a total of 11 specific grades. Many inclusions and blemishes are too tiny to be seen by anyone other than a trained diamond grader. To the naked eye, a VS1 and an SI2 diamond may look exactly the same, but these diamonds are quite different in terms of overall quality.
23 de mai. de 2024 · In the world of diamonds, certifications are the backbone of trust and quality assurance. When it comes to choosing between igi (International Gemological Institute) and gia (Gemological Institute of America), it’s crucial to understand the disparities and implications each brings to the table.
Há 4 dias · And of all the 4Cs, it is the most complex and technically difficult to analyze. The GIA Cut Grading System for the standard round brilliant diamond evaluates seven components. The first three, brightness, fire, and scintillation, consider the diamond's overall face-up appearance. The remaining four, weight ratio, durability, polish, and ...
