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Round|Lab Grown|IGI

1.34ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG790603872

Shape and cutting style on the report: Round brilliant

Certificate IGI LG790603872

Diamond specifications and retailer prices

From £133 GBP
As of November 6, 2026
Save £662 GBP (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £795 GBP at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.34ct lab-grown round diamond

This 1.34ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG790603872 or 790603872. Listed at 17 retailers as of November 6, 2026, with prices from £133 to £795, a £662 spread on the same certified stone. Reve Diamonds lists it at £795. 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

1.34
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790603872
Dimensions7.12 × 7.16 × 4.32 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.12 mm7.16 mm1.34 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790603872
Side View
Table 58.0%Crown 33.1°Girdle: MediumPavilion 41.1°Culet: NoneDepth 60.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £257 GBP|Low: £133 GBP|High: £805 GBP|Avg: £383 GBP|-4.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Reve Diamonds
November 6, 2026
Retailer 8£133 GBP
Retailer 2£152 GBP
Retailer 3£255 GBP
Retailer 1£257 GBP
Retailer 10£268 GBP
Retailer 7£326 GBP
Retailer 5£400 GBP
Retailer 6£502 GBP
Retailer 9£516 GBP
Retailer 4£689 GBP
Reve Diamonds£795 GBP

44 data points across 11 retailers

17 retailers£133 GBP to £795 GBP

Retailer 1
-
£117 GBP
Price last confirmed 36 days ago
Retailer 2
-
£123 GBP
View
Price last confirmed 45 days ago
A
Retailer 3
-
£133 GBP
View
Final sale: no returns
Retailer 4
-
£142 GBP
View
Price last confirmed 45 days ago
Retailer 5
-
£149 GBP
View
Price last confirmed 43 days ago
Retailer 6
-
£152 GBP
View
Price last confirmed 35 days ago
A
Retailer 7
-
£255 GBP
View
A
Retailer 8
-
£257 GBP
View
B+
Retailer 9
-
£268 GBP
View
A
Retailer 10
-
£326 GBP
View
B+
Retailer 11
-
£400 GBP
View
Retailer 12
-
£487 GBP
View
Price last confirmed 37 days ago
Retailer 13
-
£487 GBP
View
Price last confirmed 46 days ago
B+
Retailer 14
-
£502 GBP
View
B+
Retailer 15
-
£516 GBP
View
B
Retailer 16
-
£689 GBP
View
Most Expensive
B
Reve Diamonds
C4CC4FD3F · Nov 6
£795 GBP
$1,064 USD
View
16 more retailers have this diamond
Prices start from £133 GBPSave up to £662 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
1.34ct Round
£133 GBP