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3.51ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG622474286

Shape and cutting style on the report: Round brilliant

Certificate IGI LG622474286

Diamond specifications and retailer prices

From £552 GBP
$740 USD
As of October 31, 2026
Save £1,450 GBP (72%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,002 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 3.51ct lab-grown round diamond

This 3.51ct lab-grown round sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG622474286 or 622474286. Listed at 10 retailers as of October 29, 2026, with prices from £552 to £2,002, a £1,450 spread on the same certified stone. MOH London lists it at £2,002. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG622474286
Dimensions9.80 × 9.76 × 5.83 mm
L/W Ratio1.00
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
9.80 mm9.76 mm3.51 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG622474286
Side View
Table 62.0%Crown 35.4°Girdle: MediumPavilion 40.3°Culet: NoneDepth 59.7%

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 31
Current: £2,002 GBP|Low: £266 GBP|High: £2,015 GBP|Avg: £1,030 GBP|-0.7%
MOH London
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 31, 2026
Retailer 3£266 GBP
Retailer 7£475 GBP
Retailer 10£477 GBP
Retailer 12£552 GBP
Retailer 2£731 GBP
Retailer 15£740 GBP
Retailer 9£746 GBP
Retailer 5£771 GBP
Retailer 11£1,231 GBP
Retailer 8£1,255 GBP
Retailer 4£1,436 GBP
Retailer 14£1,552 GBP
Retailer 6£1,622 GBP
Retailer 13£1,756 GBP
MOH London£2,002 GBP

23 data points across 15 retailers

10 retailers£552 GBP to £2,002 GBP

Retailer 1
-
£477 GBP
$639 USD
Price last confirmed 15 days ago
A
Retailer 2
-
£552 GBP
$740 USD
View
A
Retailer 3
-
£731 GBP
View
B+
Retailer 4
-
£740 GBP
$991 USD
View
A
Retailer 5
-
£746 GBP
View
B
Retailer 6
-
£1,231 GBP
$1,649 USD
View
B
Retailer 7
-
£1,255 GBP
$1,681 USD
View
B
Retailer 8
-
£1,552 GBP
$2,079 USD
View
B
Retailer 9
-
£1,756 GBP
$2,353 USD
View
Most Expensive
B
MOH London
LG622474286 · Oct 29
£2,002 GBP
View
9 more retailers have this diamond
Prices start from £552 GBPSave up to £1,450 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
£552 GBP