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Round|Lab Grown|IGI

1.25ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG836610431

Shape and cutting style on the report: Round brilliant

Certificate IGI LG836610431

Diamond specifications and retailer prices

From £215 GBP
$288 USD
As of October 29, 2026
Save £1,114 GBP (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,328 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.25ct lab-grown round diamond

This 1.25ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836610431 or 836610431. Listed at 19 retailers as of October 29, 2026, with prices from £215 to £1,328, a £1,114 spread on the same certified stone. Brilliant Earth lists it at £1,328. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836610431
Dimensions6.88 × 6.93 × 4.28 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
6.88 mm6.93 mm1.25 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836610431
Side View
Table 56.0%Crown 36°Girdle: MediumPavilion 40.5°Culet: NoneDepth 62.1%

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: Oct 29
Current: £1,328 GBP|Low: £215 GBP|High: £1,328 GBP|Avg: £592 GBP
Brilliant Earth
Retailer 2
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Retailer 19
October 30, 2026
Retailer 14£215 GBP
Retailer 18£240 GBP
Retailer 9£250 GBP
Retailer 8£267 GBP
Retailer 19£377 GBP
Retailer 5£384 GBP
Retailer 12£432 GBP
Retailer 15£437 GBP
Retailer 3£459 GBP
Retailer 13£471 GBP
Retailer 17£509 GBP
Retailer 6£528 GBP
Retailer 10£596 GBP
Retailer 2£678 GBP
Retailer 7£858 GBP
Retailer 11£895 GBP
Retailer 16£1,076 GBP
Retailer 4£1,101 GBP
Brilliant Earth£1,328 GBP

5 data points across 19 retailers

19 retailers£215 GBP to £1,328 GBP

A
Cheapest Retailer
-
£215 GBP
$288 USD
A
Retailer 2
-
£240 GBP
$322 USD
View
Final sale: no returns
A
Retailer 3
-
£250 GBP
$335 USD
View
A
Retailer 4
-
£267 GBP
$358 USD
View
A
Retailer 5
-
£377 GBP
$505 USD
View
A
Retailer 6
-
£384 GBP
$515 USD
View
A
Retailer 7
-
£432 GBP
View
A
Retailer 8
-
£437 GBP
€558 EUR
View
A
Retailer 9
-
£459 GBP
ZAR 9,927 ZAR
View
A
Retailer 10
-
£471 GBP
View
A
Retailer 11
-
£509 GBP
$682 USD
View
A
Retailer 12
-
£528 GBP
$707 USD
View
B+
Retailer 13
-
£596 GBP
$799 USD
View
B+
Retailer 14
-
£678 GBP
$908 USD
View
B+
Retailer 15
-
£858 GBP
$1,150 USD
View
B+
Retailer 16
-
£895 GBP
$1,199 USD
View
B
Retailer 17
-
£1,076 GBP
View
B
Retailer 18
-
£1,101 GBP
$1,476 USD
View
Most Expensive
B
Brilliant Earth
22318782A · Oct 30
£1,328 GBP
$1,780 USD
View
18 more retailers have this diamond
Prices start from £215 GBPSave up to £1,114 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
1.25ct Round
£215 GBP