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3.73ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG622488117

Shape and cutting style on the report: Round brilliant

Certificate IGI LG622488117

Diamond specifications and retailer prices

From £992 GBP
CA$1,848 CAD
As of November 2, 2026
Save £321 GBP (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,312 GBP at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 3.73ct lab-grown round diamond

This 3.73ct 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 LG622488117 or 622488117. Listed at 2 retailers as of November 1, 2026, with prices from £992 to £1,312, a £321 spread on the same certified stone. The Diamond Guys lists it at £1,312. 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

3.73
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG622488117
Dimensions9.98 × 9.91 × 6.07 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
9.98 mm9.91 mm3.73 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG622488117
Side View
Table 58.0%Crown 34.1°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.1%

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: £1,636 GBP|Low: £200 GBP|High: £3,786 GBP|Avg: £1,047 GBP|-4.4%
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£545 GBP
Retailer 9£604 GBP
Retailer 11£661 GBP
Retailer 2£674 GBP
Retailer 10£781 GBP
Retailer 7£785 GBP
Retailer 5£830 GBP
Retailer 8£992 GBP
Retailer 3£1,289 GBP
The Diamond Guys£1,312 GBP
Retailer 1£1,636 GBP
Retailer 12£2,079 GBP
Retailer 6£2,563 GBP

60 data points across 13 retailers

2 retailers£992 GBP to £1,312 GBP

B+
Cheapest Retailer
-
£992 GBP
CA$1,848 CAD
Most Expensive
B
The Diamond Guys
1954434365 · Nov 1
£1,312 GBP
$1,761 USD
View
1 more retailer has this diamond
Prices start from £992 GBPSave up to £321 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+
3.73ct Round
£992 GBP