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3.53ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG579397776

Shape and cutting style on the report: Round brilliant

Certificate IGI LG579397776

Diamond specifications and retailer prices

From £338 GBP
$450 USD
As of October 29, 2026
Save £3,064 GBP (90%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,402 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.53ct lab-grown round diamond

This 3.53ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG579397776 or 579397776. Listed at 12 retailers as of October 29, 2026, with prices from £338 to £3,402, a £3,064 spread on the same certified stone. Brilliant Earth lists it at £3,402. 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

3.53
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG579397776
Dimensions9.83 × 9.88 × 5.99 mm
L/W Ratio1.01
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 Type IIa
Top View
9.83 mm9.88 mm3.53 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG579397776
Side View
Table 57.0%Crown 33.3°Girdle: MediumPavilion 41°Culet: NoneDepth 60.7%

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 29
Current: £3,402 GBP|Low: £338 GBP|High: £3,402 GBP|Avg: £976 GBP|+54.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 4£338 GBP
Retailer 9£509 GBP
Retailer 6£620 GBP
Retailer 7£631 GBP
Retailer 10£648 GBP
Retailer 3£665 GBP
Retailer 2£679 GBP
Retailer 8£912 GBP
Retailer 12£1,328 GBP
Retailer 11£1,463 GBP
Retailer 5£1,526 GBP
Brilliant Earth£3,402 GBP

41 data points across 12 retailers

12 retailers£338 GBP to £3,402 GBP

A
Cheapest Retailer
-
£338 GBP
$450 USD
Final sale: no returns
A
Retailer 2
-
£509 GBP
HK$5,300 HKD
View
A
Retailer 3
-
£620 GBP
$826 USD
View
A
Retailer 4
-
£631 GBP
€800 EUR
View
A
Retailer 5
-
£648 GBP
$863 USD
View
A
Retailer 6
-
£665 GBP
$885 USD
View
A
Retailer 7
-
£679 GBP
View
B+
Retailer 8
-
£912 GBP
A$1,868 AUD
View
B+
Retailer 9
-
£1,328 GBP
$1,768 USD
View
B+
Retailer 10
-
£1,463 GBP
SGD 2,633 SGD
View
B
Retailer 11
-
£1,526 GBP
View
Most Expensive
C
Brilliant Earth
8901419A · Oct 29
£3,402 GBP
$4,530 USD
View
11 more retailers have this diamond
Prices start from £338 GBPSave up to £3,064 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
3.53ct Round
£338 GBP