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Cushion|Lab Grown|IGI

2.51ct G SI2 Cushion Lab Grown Diamond

G/SI2 • IGI LG553239590

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG553239590

Diamond specifications and retailer prices

From $1,391 USD
CA$1,932 CAD
As of October 30, 2026
Save $617 USD (31%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,008 USD at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

About this 2.51ct lab-grown cushion diamond

This 2.51ct lab-grown cushion sits in the two to three carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included) and certified by IGI LG553239590 or 553239590. Listed at 2 retailers as of October 30, 2026, with prices from $1,391 to $2,008, a $617 spread on the same certified stone. The Diamond Guys lists it at $2,008. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.51
Carat
G
Color
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle42.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG553239590
Dimensions8.33 × 8.12 × 5.14 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment.
Top View
8.33 mm8.12 mm2.51 ctG / SI2
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG553239590
Side View
Table 65.0%Crown 35.5°Girdle: STK-VTKPavilion 42.3°Culet: NoneDepth 63.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: $1,391 USD|Low: $1,391 USD|High: $4,315 USD|Avg: $2,431 USD|-67.8%
Retailer 1
The Diamond Guys
October 30, 2026
Retailer 1$1,391 USD
The Diamond Guys$2,008 USD

2 data points across 2 retailers

2 retailers$1,391 USD to $2,008 USD

B
Cheapest Retailer
-
$1,391 USD
CA$1,932 CAD
Most Expensive
C
The Diamond Guys
1779253068 · Oct 30
$2,008 USD
View
1 more retailer has this diamond
Prices start from $1,391 USDSave up to $617 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
2.51ct Cushion
$1,391 USD