Answer:

1. But if I were to pick one key factor that affects emerald quality, it would be color. Emeralds have a distinct Green or very slightly bluish-Green color. Other green gemstones such as a green sapphire, green garnet and tourmalines are too dark or have a yellowish tinge.
2. Length, Width & DepthAs Decide on your ideal length-to-width ratio. ... Ritani's gemologists recommend that the best ratio for emerald cut diamonds is 1.45 to 1.55, although some people prefer longer, thinner cuts (around 1.6), and someprefer the shorter, squarer cuts (around 1.3).
3. As with diamonds, the cut of the emerald refers to its faceting, shape, width and depth. Ideally, an emerald should be cut symmetrically with uniform facets that allow for paramount color and brilliance. If cut too deeply, the light will escape on the side and the emerald will look dark.
4. The most desirable emerald colors are bluish green to pure green, with vivid color saturation and tone that's not too dark. The most-prized emeralds are highly transparent. Their color is evenly distributed, with no eye-visible color zoning.
5. Yes. Like all stones (yes, even diamonds!) Emeralds can crack or chip if struck. Because many Emeralds have surface-reaching inclusions, cracks can occur more easily.

1. •Natural Emerald Grading. Emeralds are most commonly graded on four factors: color, clarity, cut, and carat weight. Emerald color is by far the biggest factor that establishes the value and quality of natural emeralds.

2. Simply stated, emeralds are less dense than diamonds, rubies, and sapphires. Therefore, a one-carat emerald will larger than a one-carat diamond. If you're trying to get a one-carat diamond-look with your emerald, go with a 0.75 or 0.80-carat emerald.

3. Shape and Carat

Emeralds are fashioned into all the popular diamond shapes. However, the primary difference is that emeralds have a heavier carat weight at the bottom of the gem. This means that the top facet and millimeter size will look slightly smaller than a diamond of the same carat weight.

4. Is it a bad idea to buy a treated emerald? The hexagonal shape of rough emerald necessitates the need for long rectangular facets. Therefore, more inclusions and fissures are revealed compared to other gemstones. ... Given the natural green color of emeralds, it's color does not require any enhancements or treatments.

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