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Round|Lab Grown|IGI

1.04ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG818686444

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818686444

Diamond specifications and retailer prices

From £213 GBP
$286 USD
As of October 30, 2026
Save £414 GBP (66%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £627 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.04ct lab-grown round diamond

This 1.04ct lab-grown round sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818686444 or 818686444. Listed at 10 retailers as of October 29, 2026, with prices from £213 to £627, a £414 spread on the same certified stone. MOH London lists it at £627. 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

1.04
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818686444
Dimensions6.44 × 6.41 × 4.03 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.44 mm6.41 mm1.04 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818686444
Side View
Table 58.0%Crown 35.1°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 62.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £627 GBP|Low: £134 GBP|High: £631 GBP|Avg: £320 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 6£134 GBP
Retailer 9£213 GBP
Retailer 3£229 GBP
Retailer 4£234 GBP
Retailer 7£247 GBP
Retailer 2£299 GBP
Retailer 8£317 GBP
Retailer 5£340 GBP
Retailer 10£471 GBP
MOH London£627 GBP

42 data points across 10 retailers

10 retailers£213 GBP to £627 GBP

Retailer 1
-
£134 GBP
$179 USD
Price last confirmed 7 days ago
A
Retailer 2
-
£213 GBP
$286 USD
View
A
Retailer 3
-
£229 GBP
View
A
Retailer 4
-
£234 GBP
€298 EUR
View
B+
Retailer 5
-
£247 GBP
$331 USD
View
B+
Retailer 6
-
£299 GBP
$400 USD
View
B+
Retailer 7
-
£317 GBP
$425 USD
View
B+
Retailer 8
-
£340 GBP
$456 USD
View
B
Retailer 9
-
£471 GBP
$630 USD
View
Most Expensive
B
MOH London
LG818686444 · Oct 29
£627 GBP
View
9 more retailers have this diamond
Prices start from £213 GBPSave up to £414 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
1.04ct Round
£213 GBP