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Princess|Lab Grown|IGI

1.51ct E SI1 Princess Lab Grown Diamond

ID • E/SI1 • IGI LG631444203

Shape and cutting style on the report: Princess cut

Certificate IGI LG631444203

Diamond specifications and retailer prices

From £160 GBP
$213 USD
As of October 30, 2026
Save £768 GBP (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £928 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.51ct lab-grown princess diamond

This 1.51ct lab-grown princess sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG631444203 or 631444203. Listed at 14 retailers as of October 30, 2026, with prices from £160 to £928, a £768 spread on the same certified stone. Reve Diamonds lists it at £928. 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

1.51
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle42.4°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG631444203
Dimensions6.37 × 6.23 × 4.55 mm
L/W Ratio1.02
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
6.37 mm6.23 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG631444203
Side View
Table 71.0%Crown 42.4°Girdle: THN-MEDPavilion 39.7°Culet: NoneDepth 73.0%

Caratlytics Score

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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: £368 GBP|Low: £106 GBP|High: £806 GBP|Avg: £338 GBP|+4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 10£106 GBP
Retailer 9£179 GBP
Retailer 7£186 GBP
Retailer 5£199 GBP
Retailer 6£342 GBP
Retailer 2£345 GBP
Retailer 1£368 GBP
Retailer 8£446 GBP
Retailer 4£641 GBP
Retailer 3£800 GBP

42 data points across 10 retailers

14 retailers£160 GBP to £928 GBP

A
Cheapest Retailer
-
£160 GBP
$213 USD
A
Retailer 2
-
£179 GBP
$238 USD
View
Final sale: no returns
A
Retailer 3
-
£186 GBP
$248 USD
View
A
Retailer 4
-
£199 GBP
$265 USD
View
A
Retailer 5
-
£199 GBP
$265 USD
View
B+
Retailer 6
-
£342 GBP
$455 USD
View
B+
Retailer 7
-
£345 GBP
$460 USD
View
B+
Retailer 8
-
£368 GBP
View
B+
Retailer 9
-
£446 GBP
$594 USD
View
B
Retailer 10
-
£639 GBP
$851 USD
View
B
Retailer 11
-
£641 GBP
$854 USD
View
B
Retailer 12
-
£679 GBP
$904 USD
View
B
Retailer 13
-
£800 GBP
View
Most Expensive
B
Reve Diamonds
062840DEF · Oct 30
£928 GBP
$1,236 USD
View
13 more retailers have this diamond
Prices start from £160 GBPSave up to £768 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
1.51ct Princess
£160 GBP