CaratHunter
Plans
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 £1,038 GBP
CA$1,932 CAD
As of October 30, 2026
Save £460 GBP (31%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,499 GBP 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 £1,038 to £1,499, a £460 spread on the same certified stone. The Diamond Guys lists it at £1,499. 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
Colour
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

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,038 GBP|Low: £1,038 GBP|High: £3,221 GBP|Avg: £1,814 GBP|-67.8%
Retailer 1
The Diamond Guys
October 30, 2026
Retailer 1£1,038 GBP
The Diamond Guys£1,499 GBP

2 data points across 2 retailers

2 retailers£1,038 GBP to £1,499 GBP

B
Cheapest Retailer
-
£1,038 GBP
CA$1,932 CAD
Most Expensive
C
The Diamond Guys
1779253068 · Oct 30
£1,499 GBP
$2,008 USD
View
1 more retailer has this diamond
Prices start from £1,038 GBPSave up to £460 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
£1,038 GBP