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Round|Lab Grown|IGI

3.57ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG655442262

Shape and cutting style on the report: Round brilliant

Certificate IGI LG655442262

Diamond specifications and retailer prices

From £299 GBP
$401 USD
As of November 1, 2026
Save £1,160 GBP (79%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,460 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 3.57ct lab-grown round diamond

This 3.57ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG655442262 or 655442262. Listed at 15 retailers as of October 29, 2026, with prices from £299 to £1,460, a £1,160 spread on the same certified stone. MOH London lists it at £1,460. 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

3.57
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG655442262
Dimensions9.89 × 9.87 × 5.99 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.89 mm9.87 mm3.57 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG655442262
Side View
Table 58.0%Crown 34.6°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.6%

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: Nov 1
Current: £1,460 GBP|Low: £299 GBP|High: £3,754 GBP|Avg: £1,188 GBP
MOH London
Retailer 2
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Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 17
November 1, 2026
Retailer 12£299 GBP
Retailer 6£336 GBP
Retailer 16£372 GBP
Retailer 17£411 GBP
Retailer 13£481 GBP
Retailer 2£517 GBP
Retailer 4£588 GBP
Retailer 14£590 GBP
Retailer 10£609 GBP
Retailer 15£617 GBP
Retailer 3£972 GBP
Retailer 11£1,042 GBP
Retailer 5£1,194 GBP
MOH London£1,460 GBP
Retailer 7£1,929 GBP
Retailer 8£3,651 GBP
Retailer 9£3,754 GBP

6 data points across 17 retailers

15 retailers£299 GBP to £1,460 GBP

A
Cheapest Retailer
-
£299 GBP
$401 USD
A
Retailer 2
-
£336 GBP
$450 USD
View
A
Retailer 3
-
£372 GBP
$498 USD
View
A
Retailer 4
-
£411 GBP
HK$4,300 HKD
View
A
Retailer 5
-
£481 GBP
$645 USD
View
A
Retailer 6
-
£517 GBP
View
B+
Retailer 7
-
£588 GBP
$788 USD
View
A
Retailer 8
-
£590 GBP
€753 EUR
View
A
Retailer 9
-
£609 GBP
View
A
Retailer 10
-
£617 GBP
$827 USD
View
B+
Retailer 11
-
£972 GBP
$1,302 USD
View
B+
Retailer 12
-
£1,042 GBP
$1,396 USD
View
B+
Retailer 13
-
£1,194 GBP
$1,600 USD
View
B
Retailer 14
-
£1,425 GBP
$1,910 USD
View
Most Expensive
B
MOH London
LG655442262 · Oct 29
£1,460 GBP
View
14 more retailers have this diamond
Prices start from £299 GBPSave up to £1,160 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
3.57ct Round
£299 GBP