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Radiant|Lab Grown|IGI

5.38ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG551208000

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG551208000

Diamond specifications and retailer prices

From £478 GBP
$641 USD
As of October 30, 2026
Save £2,212 GBP (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,691 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 5.38ct lab-grown radiant diamond

This 5.38ct lab-grown radiant sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG551208000 or 551208000. Listed at 13 retailers as of October 28, 2026, with prices from £478 to £2,691, a £2,212 spread on the same certified stone. Rare Carat lists it at £2,691. 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

5.38
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.5°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG551208000
Dimensions12.55 × 8.51 × 5.69 mm
L/W Ratio1.47
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
12.55 mm8.51 mm5.38 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG551208000
Side View
Table 65.0%Crown 44.5°Girdle: ThickPavilion 34.5°Culet: NoneDepth 66.9%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £2,691 GBP|Low: £478 GBP|High: £6,672 GBP|Avg: £2,014 GBP
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 30, 2026
Retailer 5£478 GBP
Retailer 3£520 GBP
Retailer 10£555 GBP
Retailer 14£659 GBP
Retailer 11£687 GBP
Retailer 13£861 GBP
Retailer 2£886 GBP
Retailer 17£907 GBP
Retailer 6£1,218 GBP
Retailer 15£1,560 GBP
Retailer 16£1,702 GBP
Retailer 4£1,914 GBP
Retailer 12£2,350 GBP
Rare Carat£2,691 GBP
Retailer 8£3,325 GBP
Retailer 7£4,740 GBP
Retailer 9£6,672 GBP

4 data points across 17 retailers

13 retailers£478 GBP to £2,691 GBP

A
Cheapest Retailer
-
£478 GBP
$641 USD
A
Retailer 2
-
£520 GBP
$697 USD
View
A
Retailer 3
-
£555 GBP
$743 USD
View
A
Retailer 4
-
£659 GBP
HK$6,900 HKD
View
A
Retailer 5
-
£687 GBP
$920 USD
View
A
Retailer 6
-
£861 GBP
$1,154 USD
View
A
Retailer 7
-
£886 GBP
View
B+
Retailer 8
-
£907 GBP
$1,215 USD
View
B+
Retailer 9
-
£1,560 GBP
$2,090 USD
View
B
Retailer 10
-
£1,702 GBP
$2,280 USD
View
B
Retailer 11
-
£1,914 GBP
$2,565 USD
View
B
Retailer 12
-
£2,350 GBP
View
Most Expensive
B
Rare Carat
KI0002080KF551 · Oct 28
£2,691 GBP
$3,605 USD
View
12 more retailers have this diamond
Prices start from £478 GBPSave up to £2,212 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
5.38ct Radiant
£478 GBP