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Round|Lab Grown|IGI

3.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG619434038

Shape and cutting style on the report: Round brilliant

Certificate IGI LG619434038

Diamond specifications and retailer prices

From £338 GBP
$453 USD
As of October 27, 2026
Save £2,338 GBP (87%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,675 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 3.51ct lab-grown round diamond

This 3.51ct 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 LG619434038 or 619434038. Listed at 11 retailers as of October 27, 2026, with prices from £338 to £2,675, a £2,338 spread on the same certified stone. Do Amore Diamonds lists it at £2,675. 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

3.51
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG619434038
Dimensions9.91 × 9.84 × 5.90 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
9.91 mm9.84 mm3.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG619434038
Side View
Table 59.0%Crown 33.9°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 59.8%

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 27
Current: £2,675 GBP|Low: £250 GBP|High: £2,772 GBP|Avg: £1,005 GBP|-3.5%
Do Amore Diamonds
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
October 29, 2026
Retailer 15£302 GBP
Retailer 10£338 GBP
Retailer 4£349 GBP
Retailer 8£577 GBP
Retailer 9£592 GBP
Retailer 13£592 GBP
Retailer 7£664 GBP
Retailer 5£739 GBP
Retailer 6£779 GBP
Retailer 14£958 GBP
Retailer 11£1,048 GBP
Retailer 12£1,326 GBP
Retailer 2£1,524 GBP
Retailer 3£1,811 GBP
Do Amore Diamonds£2,675 GBP

28 data points across 15 retailers

11 retailers£338 GBP to £2,675 GBP

Retailer 1
-
£302 GBP
$405 USD
Price last confirmed 7 days ago
A
Retailer 2
-
£338 GBP
$453 USD
View
A
Retailer 3
-
£577 GBP
View
B+
Retailer 4
-
£592 GBP
$795 USD
View
A
Retailer 5
-
£592 GBP
$795 USD
View
B+
Retailer 6
-
£958 GBP
$1,286 USD
View
Retailer 7
-
£1,048 GBP
$1,407 USD
View
Price last confirmed 7 days ago
B+
Retailer 8
-
£1,326 GBP
$1,780 USD
View
B
Retailer 9
-
£1,524 GBP
View
B
Retailer 10
-
£1,811 GBP
$2,430 USD
View
Most Expensive
B
Do Amore Diamonds
27-E1E1CCB9A · Oct 29
£2,675 GBP
$3,590 USD
View
10 more retailers have this diamond
Prices start from £338 GBPSave up to £2,338 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
3.51ct Round
£338 GBP