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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
Há 1 dia · Garnets are a set of closely related minerals that form a group, resulting in gemstones in almost every color. Red garnets have a long history, but modern gem buyers can pick from a rich palette of garnet colors: greens, oranges, pinkish oranges, deeply saturated purplish reds, and even some blues. Red garnet is one of the most common and ...
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 ...
Há 2 dias · Diamonds, known for their unrivaled hardness and dazzling brilliance, are the most coveted gemstones in the world. Composed entirely of carbon atoms arranged in a crystal lattice, diamonds exhibit exceptional durability and optical properties. Emerald Cut diamond with a finished weight of 142.90 carats. These precious stones range from ...
Há 2 dias · Diamond Carat Weight. Diamond carat weight is the measurement of how much a diamond weighs. A metric "carat" is defined as 200 milligrams. Each carat can be subdivided into 100 'points.'. This allows very precise measurements to the hundredth decimal place. A jeweler may describe the weight of a diamond below one carat by its 'points' alone.
Há 2 dias · The Gemological Institute of America (GIA) developed 11 clarity scales to decide the quality of a diamond for its sale value. The GIA clarity scale spans from Flawless (FL) to included (I) having internally flawless (IF), very, very slightly included (VVS), very slightly included (VS) and slightly included (SI) in between.
