The Emerald Cut is rectangular with cut corners. It is a step cut as opposed to a brilliant cut. The facets are broad with flat planes resembling the steps of a stair. That's why it is refered to as a "step" cut. Unlike the Marquise brilliant, there is no bow-tie effect on an Emerald cut.
What to watch out for:
It is better to go for higher quality Emeralds, because both inclusions and lower color are more noticeable in Emeralds than in other cuts.
Plot Diagram for Emerald Cuts:
This is the plot diagram that labs use to grade emerald cuts:
Notable Emerald Cut Engagement Rings:
Melania Trump's Emerald Cut Engagement Ring:
Nicole Richie's Engagement Ring:
Paris Hilton's Emerald Ring:
Camilla Bowle's Emerald Diamond Ring:
Color and Clarity of an Emerald Cut?
Open Experiment: If we recut an I1 emerald into a radiant, will it improve the look?
DIAMONDS TUTORIAL NAVIGATOR
Real Graders Don't Drink Kool-Aid
Lesson 1, The 5Cs:
Carat, Color, Clarity, Cut, Cost
Lesson 2, Shapes:
Round, Asscher, Cushion, Emerald, Heart,
Marquise, Oval, Pear, Princess, Radiant
Lesson 3, Articles:
How to Buy a Diamond, How to Sell Your Jewelry,
How to Read a Diamond Certificate,
The difference between a Certificate & an Appraisal,
What is the SI3?,
World's Largest Polished Diamonds,
World's Largest Rough Diamonds, Diamond Facts
Gem labs and the science, art and marketing of diamonds