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GIA Certified Loose Emeralds

GIA certified emeralds are gemstones that have been thoroughly evaluated by the Gemological Institute of America. Gemstones that are certified have been found to be authentic. Loose GIA certified gemstones can be crafted into jewelry or used for a variety of purposes.

What are emeralds, and what do they look like?

Emeralds are a specific type of a mineral known as Beryl. This class of gemstone comes in a wide variety of colors, including colorless, red, purple, and green, among many others. However, only the green gems are considered to be true emeralds. The shades of green may vary depending on where the gem was found. They can be translucent or transparent. Loose stones in rough form are likely to have irregularities.

What quality factors does the GIA look for?

When grading an emerald gemstone to be certified, the GIA evaluates the following:

  • Color: The GIA considered a bluish green to a pure green color to be desirable. The color of the gem should be vivid and evenly distributed.
  • Clarity: Some GIA certified gemstones have inclusions or irregularities that can be seen by the naked eye. Inclusions can make the gem look mossy or cloudy. The exceptionally high-quality gemstones have no visible inclusions, though inclusions that do not affect the clarity or transparency of the gemstone still make for a good stone.
  • Cut: The cut can have an impact on the quality of loose gemstones. The GIA looks for a cut that maximizes the gem's color, color tone, and color saturation. For example, a shallow cut will result in a lighter green color than a deeper cut.
  • Carat weight: Like most other gemstones, the GIA considers larger gems to be of greater value than smaller stones of the same quality.
How are loose gemstones weighed?

The GIA determines the size of a gemstone by its carat weight. A carat is a unit of measurement that is roughly equal to about 0.2 grams, or the approximate weight of a paper clip. Precious gemstones are weighed in a special digital scale that is specifically designed to weigh the carat of one or more gemstones.

What varieties of emeralds are there?

There are five main types of these precious gemstones that may be GIA certified and that can be acquired loose to be used in jewelry:

  • Brazilian: These are gemstones that came from mines in Brazil.
  • Cat's eye: These rare gemstones have dense inclusions of slender, parallel fibers that look like a line of light is going through the stone.
  • Colombian: These are gemstones that come from mines in Colombia. The GIA considers these gemstones to often have the most vivid color.
  • Trapiche: Also known as a star emerald, these gemstones have black impurities that form a star with six rays, sometimes with a hexagon in the center.
  • Zambian: These stones from Zambia are also known for their color and transparency.

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