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Round|Lab Grown|IGI

3.75ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG622479011

Shape and cutting style on the report: Round brilliant

Certificate IGI LG622479011

Diamond specifications and retailer prices

From £636 GBP
€813 EUR
As of November 2, 2026
Save £1,428 GBP (69%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,064 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.75ct lab-grown round diamond

This 3.75ct 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 LG622479011 or 622479011. Listed at 13 retailers as of October 31, 2026, with prices from £636 to £2,064, a £1,428 spread on the same certified stone. Brilliant Earth lists it at £2,064. 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

3.75
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG622479011
Dimensions10.09 × 10.07 × 6.06 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
10.09 mm10.07 mm3.75 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG622479011
Side View
Table 58.0%Crown 33.9°Girdle: THN-MEDPavilion 40.6°Culet: NoneDepth 60.1%

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: Nov 2
Current: £2,064 GBP|Low: £391 GBP|High: £2,176 GBP|Avg: £957 GBP|-5.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 3£391 GBP
Retailer 11£551 GBP
Retailer 2£636 GBP
Retailer 7£645 GBP
Retailer 10£713 GBP
Retailer 8£755 GBP
Retailer 4£755 GBP
Retailer 9£1,082 GBP
Retailer 6£1,234 GBP
Retailer 5£1,926 GBP
Brilliant Earth£2,064 GBP

37 data points across 11 retailers

13 retailers£636 GBP to £2,064 GBP

Retailer 1
-
£315 GBP
$423 USD
Price last confirmed 40 days ago
Retailer 2
-
£353 GBP
$474 USD
View
Price last confirmed 40 days ago
Retailer 3
-
£386 GBP
$518 USD
View
Price last confirmed 36 days ago
A
Retailer 4
-
£636 GBP
€813 EUR
View
B+
Retailer 5
-
£645 GBP
$865 USD
View
B+
Retailer 6
-
£713 GBP
$957 USD
View
A
Retailer 7
-
£755 GBP
$1,013 USD
View
B+
Retailer 8
-
£755 GBP
View
B+
Retailer 9
-
£1,082 GBP
$1,452 USD
View
B
Retailer 10
-
£1,234 GBP
$1,656 USD
View
Retailer 11
-
£1,258 GBP
$1,688 USD
View
Price last confirmed 36 days ago
B
Retailer 12
-
£1,926 GBP
View
Most Expensive
B
Brilliant Earth
9288387A · Oct 31
£2,064 GBP
$2,770 USD
View
12 more retailers have this diamond
Prices start from £636 GBPSave up to £1,428 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
3.75ct Round
£636 GBP