Lab-grown diamonds emerald cut
Discover our collection of IGI-certified emerald-cut lab-grown diamonds, a rectangular cut with clean lines and timeless elegance.
What is a lab-grown emerald cut diamond
The emerald cut is a rectangular cut with cropped corners and long, parallel step facets that run the length of the stone.
Unlike brilliant cuts, it does not aim for maximum sparkle but for deep transparency that allows the inside of the diamond to be seen clearly.
The result is a clean, architectural, and elegant-looking stone, closely associated with classic jewelry and Art Deco style.
In its laboratory version, the emerald cut diamond maintains exactly the same properties as a natural diamond: same hardness, same chemical composition, and same light refraction capacity.
The difference lies in the creation process: controlled, traceable, and free from mining extraction.
Why choose a laboratory diamond with an emerald cut
The emerald cut is one of the most demanding in terms of the stone's internal quality.
Its step facets act as windows, making inclusions and color variations more visible than in brilliant cuts.
Therefore, an emerald diamond with good clarity and good color offers a spectacular visual result.
At Diamante de Laboratorio, we work exclusively with stones selected under demanding gemological criteria:
- Minimum VVS2 clarity
- D or E color
- IGI certification to validate each parameter
This ensures there are no surprises when you receive the stone.
How the laboratory diamond with an emerald cut is created
The process begins with the growth of the rough diamond using CVD or HPHT technology.
In both cases, the result is a pure carbon crystal with the same molecular structure as a natural diamond.
Once the rough diamond is obtained, the cutting process begins.
The emerald cut requires millimeter precision: the lapidary defines the rectangular proportion, plans the angles of the step facets, and works the edges to achieve perfectly straight lines.
The final result is reviewed by a certified gemologist who verifies clarity, color, cut, and carat weight before issuing the certificate.
The 4Cs in the emerald cut diamond
Color
The emerald cut retains color more intensely than brilliant cuts.
Therefore, we recommend prioritizing D or E colors, which offer a visually clean appearance under practically any type of lighting.
Clarity
Clarity is the most important factor in the emerald cut.
Its step facets transmit light directly through the stone, making inclusions located near the center or table visible.
We recommend VVS1 or VVS2 clarities to guarantee a clean appearance to the naked eye.
Cut
The cut is evaluated primarily by its proportions and symmetry.
The most classic length-to-width ratio is between 1.40 and 1.50, offering a balance between visual presence and robustness.
The symmetry of the cropped corners and the parallelism of the facets are also decisive.
At Diamante de Laboratorio, we only work with Excellent cuts.
Carat
The emerald cut has a relatively large visible surface for its weight, making a 1-carat stone appear larger than an equivalent round brilliant.
It is one of the cuts with the best ratio between visual size and price.
For engagement rings, the most common sizes range from 2.00 ct to 5 ct.
IGI certification for emerald cut laboratory diamonds
All emerald diamonds in our collection are certified by the International Gemological Institute (IGI), one of the most recognized laboratories for lab-grown diamonds.
The certificate documents:
- Laboratory origin
- Creation method: CVD or HPHT
- The 4Cs independently evaluated
This report represents the written guarantee of the stone's actual characteristics.
At Diamante de Laboratorio, we do not sell any diamonds without a certificate.
How to choose your emerald cut laboratory diamond
If this is your first time buying an emerald diamond, there are three factors that define the visual result:
- Length-to-width ratio: decide if you prefer a more square stone (1.20–1.30) or a more elongated one (1.40–1.60).
- Clarity: prioritize at least VVS2 to maintain a clean appearance.
- Color: D or E grades allow the step facets to look especially elegant and transparent.
If you have questions about which combination of the 4Cs best suits your budget, our team can advise you without obligation.
Emerald Cut Lab Grown Diamond FAQs
Yes, and it is an increasingly popular choice for those looking for an aesthetic different from the classic round brilliant. The emerald cut offers elegance, distinction, and a very striking visual transparency. The only consideration is to prioritize good clarity (VVS2 or better) so that the step facets show without distractions.
Because it uses long, parallel step facets instead of the triangular and fan-shaped facets of brilliant cuts. This produces a distinct optical effect, known as the "mirror effect" or "hall of mirrors": light does not scatter into flashes but reflects in layers, giving a calmer, deeper brilliance.
Yes, significantly. A lab-grown emerald cut diamond can be more than 80% cheaper than a natural diamond with the same certified characteristics. This allows access to sizes and qualities that would be out of the usual budget with natural diamonds.
No. A lab-grown diamond and a natural diamond are optically identical. Not even a gemologist can tell them apart with the naked eye: specialized equipment is required to detect their origin. The only difference is the story of how they were formed.
The most sought-after ratio is between 1.40 and 1.50, which offers the elongated proportion characteristic of this cut without the stone appearing excessively narrow. However, personal preferences and the type of setting also play a role: narrow solitaire settings favor higher ratios, while pavé settings generally look better with squarer ratios.
Yes. At Diamante de Laboratorio, we work with jewelers who create custom settings. You can choose the carat weight, color, clarity, and type of metal (18-karat white, yellow, or rose gold), and we will prepare a personalized quote for you. Contact us through the contact form or via WhatsApp.
