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Cushion|Lab Grown|IGI

2.50ct I VS1 Cushion Lab Grown Diamond

ID • I/VS1 • IGI LG621442479

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

Certificate IGI LG621442479

Diamond specifications and retailer prices

From $702 USD
€669 EUR
As of October 31, 2026
Save $1,038 USD (60%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,740 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 2.5ct lab-grown cushion diamond

This 2.5ct lab-grown cushion sits in the two to three carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG621442479 or 621442479. Listed at 3 retailers as of October 31, 2026, with prices from $702 to $1,740, a $1,038 spread on the same certified stone. Brilliant Earth lists it at $1,740. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.50
Carat
I
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle32.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621442479
Dimensions7.72 × 7.40 × 4.72 mm
L/W Ratio1.04
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
7.72 mm7.40 mm2.50 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621442479
Side View
Table 66.0%Crown 34.1°Girdle: STK-THKPavilion 32.2°Culet: NoneDepth 63.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $1,740 USD|Low: $687 USD|High: $2,670 USD|Avg: $1,510 USD|-34.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
October 31, 2026
Retailer 2$702 USD
Retailer 3$1,143 USD
Brilliant Earth$1,740 USD
Retailer 4$1,783 USD

13 data points across 4 retailers

3 retailers$702 USD to $1,740 USD

A
Cheapest Retailer
-
$702 USD
€669 EUR
B+
Retailer 2
-
$1,143 USD
View
Most Expensive
B+
Brilliant Earth
14127427A · Oct 31
$1,740 USD
View
2 more retailers have this diamond
Prices start from $702 USDSave up to $1,038 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.

A
2.50ct Cushion
$702 USD