CaratHunter
Plans
Round|Lab Grown|IGI

1.29ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG839698431

Shape and cutting style on the report: Round brilliant

Certificate IGI LG839698431

Diamond specifications and retailer prices

From £218 GBP
$290 USD
As of October 28, 2026
Save £1,660 GBP (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,877 GBP at Brilliant Earth · As of October 29, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG839698431 or 839698431. Listed at 14 retailers as of October 28, 2026, with prices from £218 to £1,877, a £1,660 spread on the same certified stone. Brilliant Earth lists it at £1,877. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839698431
Dimensions7.04 × 7.09 × 4.20 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.04 mm7.09 mm1.29 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839698431
Side View
Table 60.0%Crown 33.7°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 59.6%

Caratlytics Score

How it works →
A+
Exceptional
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: Oct 28
Current: £461 GBP|Low: £218 GBP|High: £1,003 GBP|Avg: £524 GBP|+1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 8£218 GBP
Retailer 5£269 GBP
Retailer 9£327 GBP
Retailer 2£360 GBP
Retailer 7£393 GBP
Retailer 6£400 GBP
Retailer 11£416 GBP
Retailer 1£461 GBP
Retailer 10£589 GBP
Retailer 4£749 GBP
Retailer 13£781 GBP
Retailer 12£927 GBP
Retailer 3£978 GBP

23 data points across 13 retailers

14 retailers£218 GBP to £1,877 GBP

A+
Cheapest Retailer
-
£218 GBP
$290 USD
Final sale: no returns
A
Retailer 2
-
£269 GBP
HK$2,800 HKD
View
A
Retailer 3
-
£327 GBP
$435 USD
View
A
Retailer 4
-
£360 GBP
$480 USD
View
A
Retailer 5
-
£393 GBP
View
A
Retailer 6
-
£400 GBP
€507 EUR
View
A
Retailer 7
-
£416 GBP
ZAR 8,940 ZAR
View
A
Retailer 8
-
£461 GBP
View
A
Retailer 9
-
£589 GBP
A$1,206 AUD
View
B+
Retailer 10
-
£749 GBP
$997 USD
View
B+
Retailer 11
-
£781 GBP
SGD 1,406 SGD
View
B+
Retailer 12
-
£927 GBP
$1,235 USD
View
B+
Retailer 13
-
£978 GBP
View
Most Expensive
B
Brilliant Earth
21711149A · Oct 29
£1,877 GBP
$2,500 USD
View
13 more retailers have this diamond
Prices start from £218 GBPSave up to £1,660 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
£218 GBP