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Cushion|Lab Grown|IGI

2.51ct H VS1 Cushion Lab Grown Diamond

ID • H/VS1 • IGI LG516248469

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG516248469

Diamond specifications and retailer prices

From £415 GBP
$557 USD
As of October 28, 2026
Save £946 GBP (70%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,361 GBP at The Diamond Guys · As of November 3, 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG516248469 or 516248469. Listed at 3 retailers as of October 28, 2026, with prices from £415 to £1,361, a £946 spread on the same certified stone. The Diamond Guys lists it at £1,361. 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

2.51
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG516248469
Dimensions7.57 × 7.48 × 5.32 mm
L/W Ratio1.01
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
7.57 mm7.48 mm2.51 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG516248469
Side View
Table 68.0%Crown 32.2°Girdle: MED-VTKPavilion 39.2°Culet: NoneDepth 71.1%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 28
Current: £415 GBP|Low: £224 GBP|High: £1,796 GBP|Avg: £984 GBP|-20.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
The Diamond Guys
September 13, 2026
Retailer 1£415 GBP
Retailer 3£469 GBP
Retailer 6£510 GBP
Retailer 4£654 GBP
Retailer 2£1,029 GBP
Retailer 5£1,224 GBP
The Diamond Guys£1,361 GBP

32 data points across 7 retailers

3 retailers£415 GBP to £1,361 GBP

B+
Cheapest Retailer
-
£415 GBP
$557 USD
B+
Retailer 2
-
£1,029 GBP
CA$1,918 CAD
View
Most Expensive
B+
The Diamond Guys
1779253076 · Nov 3
£1,361 GBP
$1,827 USD
View
2 more retailers have this diamond
Prices start from £415 GBPSave up to £946 GBP

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
£415 GBP