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Cushion|Lab Grown|IGI

2.59ct D VS2 Cushion Lab Grown Diamond

EX • D/VS2 • IGI LG818690339

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818690339

Diamond specifications and retailer prices

From £598 GBP
As of October 26, 2026
Save £1,805 GBP (75%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £2,403 GBP at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 2.59ct lab-grown cushion diamond

This 2.59ct lab-grown cushion sits in the two to three carat band, graded D colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818690339 or 818690339. Listed at 2 retailers as of October 26, 2026, with prices from £598 to £2,403, a £1,805 spread on the same certified stone. Brilliant Earth lists it at £2,403. 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

2.59
Carat
D
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818690339
Dimensions9.43 × 7.18 × 4.82 mm
L/W Ratio1.31
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.43 mm7.18 mm2.59 ctD / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818690339
Side View
Table 62.0%Crown 34.2°Girdle: THN-THKPavilion 35.8°Culet: NoneDepth 67.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 26
Current: £2,403 GBP|Low: £545 GBP|High: £2,876 GBP|Avg: £1,234 GBP|-16.4%
Brilliant Earth
Retailer 2
Retailer 3
October 26, 2026
Retailer 3£545 GBP
Retailer 2£598 GBP
Brilliant Earth£2,403 GBP

27 data points across 3 retailers

2 retailers£598 GBP to £2,403 GBP

A
Cheapest Retailer
-
£598 GBP
Most Expensive
B
Brilliant Earth
21331389A · Oct 26
£2,403 GBP
$3,200 USD
View
1 more retailer has this diamond
Prices start from £598 GBPSave up to £1,805 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.

A
2.59ct Cushion
£598 GBP