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3.80ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG623479341

Shape and cutting style on the report: Round brilliant

Certificate IGI LG623479341

Diamond specifications and retailer prices

From £1,010 GBP
CA$1,883 CAD
As of November 2, 2026
Save £327 GBP (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,337 GBP at The Diamond Guys · As of November 3, 2026
View at The Diamond Guys

About this 3.8ct lab-grown round diamond

This 3.8ct 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 LG623479341 or 623479341. Listed at 2 retailers as of November 2, 2026, with prices from £1,010 to £1,337, a £327 spread on the same certified stone. The Diamond Guys lists it at £1,337. 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

3.80
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623479341
Dimensions10.15 × 10.10 × 6.08 mm
L/W Ratio1.00
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
10.15 mm10.10 mm3.80 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623479341
Side View
Table 59.0%Crown 34.1°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.0%

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: £834 GBP|Low: £201 GBP|High: £3,860 GBP|Avg: £1,007 GBP|-7.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
The Diamond Guys
August 3, 2026
Retailer 3£547 GBP
Retailer 5£609 GBP
Retailer 9£664 GBP
Retailer 11£676 GBP
Retailer 8£782 GBP
Retailer 4£813 GBP
Retailer 1£834 GBP
Retailer 6£1,010 GBP
Retailer 2£1,293 GBP
The Diamond Guys£1,337 GBP
Retailer 10£2,079 GBP
Retailer 7£3,860 GBP

58 data points across 12 retailers

2 retailers£1,010 GBP to £1,337 GBP

B+
Cheapest Retailer
-
£1,010 GBP
CA$1,883 CAD
Most Expensive
B
The Diamond Guys
1954434354 · Nov 3
£1,337 GBP
$1,794 USD
View
1 more retailer has this diamond
Prices start from £1,010 GBPSave up to £327 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+
3.80ct Round
£1,010 GBP