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Princess|Lab Grown|IGI

2.51ct D SI1 Princess Lab Grown Diamond

ID • D/SI1 • IGI LG739587959

Shape and cutting style on the report: Princess cut

Certificate IGI LG739587959

Diamond specifications and retailer prices

From £304 GBP
$407 USD
As of October 30, 2026
Save £1,926 GBP (86%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,229 GBP at Diamonds Direct · As of October 31, 2026
View at Diamonds Direct

About this 2.51ct lab-grown princess diamond

This 2.51ct lab-grown princess sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG739587959 or 739587959. Listed at 10 retailers as of October 30, 2026, with prices from £304 to £2,229, a £1,926 spread on the same certified stone. Diamonds Direct lists it at £2,229. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.1°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739587959
Dimensions7.56 × 7.30 × 5.24 mm
L/W Ratio1.04
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.56 mm7.30 mm2.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739587959
Side View
Table 69.0%Crown 44.1°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 71.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £2,229 GBP|Low: £292 GBP|High: £2,229 GBP|Avg: £896 GBP|+11.1%
Diamonds Direct
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5£304 GBP
Retailer 8£340 GBP
Retailer 10£340 GBP
Retailer 2£461 GBP
Retailer 9£596 GBP
Retailer 4£597 GBP
Retailer 7£1,056 GBP
Retailer 6£1,211 GBP
Retailer 3£1,480 GBP
Diamonds Direct£2,229 GBP

43 data points across 10 retailers

10 retailers£304 GBP to £2,229 GBP

A
Cheapest Retailer
-
£304 GBP
$407 USD
A
Retailer 2
-
£340 GBP
$456 USD
View
Final sale: no returns
A
Retailer 3
-
£340 GBP
$456 USD
View
A
Retailer 4
-
£461 GBP
View
A
Retailer 5
-
£596 GBP
$799 USD
View
A
Retailer 6
-
£597 GBP
$800 USD
View
B+
Retailer 7
-
£1,056 GBP
$1,415 USD
View
B+
Retailer 8
-
£1,211 GBP
$1,622 USD
View
B
Retailer 9
-
£1,480 GBP
View
Most Expensive
B
Diamonds Direct
1115533 · Oct 31
£2,229 GBP
$2,987 USD
View
9 more retailers have this diamond
Prices start from £304 GBPSave up to £1,926 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
2.51ct Princess
£304 GBP