Radiant|Lab Grown|IGI

1.04ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG839643821

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG839643821

Diamond specifications and retailer prices

From £273 GBP
As of October 31, 2026
Save £639 GBP (70%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £911 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.04ct lab-grown radiant diamond

This 1.04ct lab-grown radiant 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 LG839643821 or 839643821. Listed at 19 retailers as of October 31, 2026, with prices from £273 to £911, a £639 spread on the same certified stone. Do Amore Diamonds lists it at £911. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839643821
Dimensions7.29 × 4.89 × 3.38 mm
L/W Ratio1.49
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.29 mm4.89 mm1.04 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839643821
Side View
Table 65.0%Crown 45°Girdle: MediumPavilion 38°Culet: NoneDepth 69.1%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £911 GBP|Low: £108 GBP|High: £956 GBP|Avg: £370 GBP|-4.7%
Do Amore Diamonds
Retailer 2
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October 30, 2026
Retailer 2£108 GBP
Retailer 19£126 GBP
Retailer 5£134 GBP
Retailer 18£134 GBP
Retailer 20£182 GBP
Retailer 9£183 GBP
Retailer 14£192 GBP
Retailer 15£261 GBP
Retailer 6£287 GBP
Retailer 10£299 GBP
Retailer 16£303 GBP
Retailer 7£374 GBP
Retailer 13£394 GBP
Retailer 11£411 GBP
Retailer 3£476 GBP
Retailer 4£522 GBP
Retailer 12£567 GBP
Retailer 8£606 GBP
Retailer 17£696 GBP
Do Amore Diamonds£911 GBP

17 data points across 20 retailers

19 retailers£273 GBP to £911 GBP

Retailer 1
-
£108 GBP
Price last confirmed 8 days ago
Retailer 2
-
£126 GBP
View
Price last confirmed 10 days ago
Retailer 3
-
£134 GBP
View
Price last confirmed 13 days ago
Retailer 4
-
£134 GBP
View
Price last confirmed 9 days ago
Retailer 5
-
£182 GBP
View
Price last confirmed 8 days ago
Retailer 6
-
£183 GBP
View
Price last confirmed 8 days ago
Retailer 7
-
£192 GBP
View
Price last confirmed 8 days ago
Retailer 8
-
£261 GBP
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£273 GBP
View
Retailer 10
-
£287 GBP
View
Price last confirmed 11 days ago
Retailer 11
-
£299 GBP
View
Price last confirmed 17 days ago
Retailer 12
-
£374 GBP
View
Price last confirmed 8 days ago
Retailer 13
-
£394 GBP
View
Price last confirmed 8 days ago
Retailer 14
-
£411 GBP
View
Price last confirmed 9 days ago
Retailer 15
-
£476 GBP
View
Price last confirmed 10 days ago
Retailer 16
-
£522 GBP
View
Price last confirmed 10 days ago
Retailer 17
-
£606 GBP
View
Price last confirmed 9 days ago
Retailer 18
-
£696 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
Do Amore Diamonds
25-2343067-007C · Oct 31
£911 GBP
$1,220 USD
View
18 more retailers have this diamond
Prices start from £273 GBPSave up to £639 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+
1.04ct Radiant
£273 GBP