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Cushion|Lab Grown|IGI

2.51ct G SI1 Cushion Lab Grown Diamond

ID • G/SI1 • IGI LG522239882

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG522239882

Diamond specifications and retailer prices

From €1,772 EUR
$1,980 USD
As of October 31, 2026
Save €3,708 EUR (68%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €6,462 EUR at Loose Grown Diamond · As of November 1, 2026
View at Loose Grown Diamond

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG522239882 or 522239882. Listed at 8 retailers as of October 31, 2026, with a 209% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.51
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG522239882
Dimensions7.99 × 7.57 × 4.81 mm
L/W Ratio1.06
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 Type IIa
Top View
7.99 mm7.57 mm2.51 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG522239882
Side View
Table 62.5%Crown 36.6°Girdle: STK-VTKPavilion 35°Culet: NoneDepth 63.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €6,462 EUR|Low: €1,772 EUR|High: €9,058 EUR|Avg: €5,254 EUR
Loose Grown Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 5€1,772 EUR
Retailer 7€4,029 EUR
Retailer 6€4,173 EUR
Retailer 4€5,480 EUR
Retailer 3€5,635 EUR
Loose Grown Diamond€6,462 EUR
Retailer 2€8,937 EUR

43 data points across 7 retailers

8 retailers€1,772 EUR to €5,480 EUR

B+
Cheapest Retailer
-
€1,772 EUR
$1,980 USD
B
Retailer 2
-
€4,029 EUR
$4,501 USD
View
Final sale: no returns
Retailer 3
-
€4,173 EUR
$4,662 USD
View
Price last confirmed 20 days ago
B
Retailer 4
-
€4,220 EUR
$4,715 USD
View
B
Retailer 5
-
€5,480 EUR
£4,821 GBP
View
Retailer 6
-
€5,635 EUR
£4,957 GBP
View
Price under review
Most Expensive
Loose Grown Diamond
522239882 · Nov 1
€6,462 EUR
$7,219 USD
View
Price under review
6 more retailers have this diamond
Prices start from €1,772 EURSave up to €3,708 EUR

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
€1,772 EUR