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Round|Lab Grown|IGI

3.75ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG625497433

Shape and cutting style on the report: Round brilliant

Certificate IGI LG625497433

Diamond specifications and retailer prices

From £963 GBP
CA$1,795 CAD
As of November 2, 2026
Save £311 GBP (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,274 GBP at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

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 LG625497433 or 625497433. Listed at 2 retailers as of November 1, 2026, with prices from £963 to £1,274, a £311 spread on the same certified stone. The Diamond Guys lists it at £1,274. 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 angle35.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG625497433
Dimensions9.95 × 9.90 × 6.14 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
9.95 mm9.90 mm3.75 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG625497433
Side View
Table 57.0%Crown 35.2°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 2
Current: £573 GBP|Low: £195 GBP|High: £3,808 GBP|Avg: £1,081 GBP|-7.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
The Diamond Guys
August 3, 2026
Retailer 4£526 GBP
Retailer 1£573 GBP
Retailer 10£652 GBP
Retailer 12£657 GBP
Retailer 5£791 GBP
Retailer 9£793 GBP
Retailer 6£895 GBP
Retailer 7£963 GBP
Retailer 3£1,252 GBP
The Diamond Guys£1,274 GBP
Retailer 2£1,732 GBP
Retailer 11£2,027 GBP
Retailer 8£3,808 GBP

62 data points across 13 retailers

2 retailers£963 GBP to £1,274 GBP

B+
Cheapest Retailer
-
£963 GBP
CA$1,795 CAD
Most Expensive
B
The Diamond Guys
1954434362 · Nov 1
£1,274 GBP
$1,710 USD
View
1 more retailer has this diamond
Prices start from £963 GBPSave up to £311 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.

B+
3.75ct Round
£963 GBP