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Round|Lab Grown|IGI

1.29ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG840609033

Shape and cutting style on the report: Round brilliant

Certificate IGI LG840609033

Diamond specifications and retailer prices

From £201 GBP
$269 USD
As of November 1, 2026
Save £1,247 GBP (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,448 GBP at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 1.29ct lab-grown round diamond

This 1.29ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840609033 or 840609033. Listed at 22 retailers as of November 1, 2026, with prices from £201 to £1,448, a £1,247 spread on the same certified stone. Brilliant Earth lists it at £1,448. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840609033
Dimensions6.99 × 7.03 × 4.29 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.99 mm7.03 mm1.29 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840609033
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £1,448 GBP|Low: £201 GBP|High: £1,455 GBP|Avg: £559 GBP|-0.5%
Brilliant Earth
Retailer 2
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Retailer 21
November 2, 2026
Retailer 21£201 GBP
Retailer 9£234 GBP
Retailer 4£249 GBP
Retailer 12£249 GBP
Retailer 3£336 GBP
Retailer 17£369 GBP
Retailer 16£401 GBP
Retailer 15£403 GBP
Retailer 13£430 GBP
Retailer 5£438 GBP
Retailer 2£473 GBP
Retailer 6£539 GBP
Retailer 18£597 GBP
Retailer 20£607 GBP
Retailer 7£802 GBP
Retailer 8£816 GBP
Retailer 11£840 GBP
Retailer 14£892 GBP
Retailer 10£899 GBP
Retailer 19£1,005 GBP
Brilliant Earth£1,448 GBP

30 data points across 21 retailers

22 retailers£201 GBP to £1,448 GBP

A
Cheapest Retailer
-
£201 GBP
$269 USD
A
Retailer 2
-
£234 GBP
$313 USD
View
Retailer 3
-
£249 GBP
$334 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
£249 GBP
$334 USD
View
A
Retailer 5
-
£287 GBP
HK$3,000 HKD
View
A
Retailer 6
-
£336 GBP
$450 USD
View
A
Retailer 7
-
£369 GBP
$495 USD
View
A
Retailer 8
-
£401 GBP
€512 EUR
View
A
Retailer 9
-
£403 GBP
View
A
Retailer 10
-
£430 GBP
ZAR 9,309 ZAR
View
A
Retailer 11
-
£438 GBP
$587 USD
View
B+
Retailer 12
-
£473 GBP
View
B+
Retailer 13
-
£539 GBP
$722 USD
View
B+
Retailer 14
-
£597 GBP
$800 USD
View
B+
Retailer 15
-
£607 GBP
A$1,251 AUD
View
B
Retailer 16
-
£802 GBP
$1,074 USD
View
B
Retailer 17
-
£816 GBP
SGD 1,477 SGD
View
B
Retailer 18
-
£840 GBP
$1,125 USD
View
B
Retailer 19
-
£892 GBP
$1,195 USD
View
B
Retailer 20
-
£899 GBP
$1,204 USD
View
B
Retailer 21
-
£1,005 GBP
View
Most Expensive
B
Brilliant Earth
21792072A · Nov 1
£1,448 GBP
$1,940 USD
View
21 more retailers have this diamond
Prices start from £201 GBPSave up to £1,247 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
1.29ct Round
£201 GBP