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Round|Lab Grown|IGI

1.03ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG720539045

Shape and cutting style on the report: Round brilliant

Certificate IGI LG720539045

Diamond specifications and retailer prices

From £149 GBP
$198 USD
As of October 29, 2026
Save £743 GBP (83%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £991 GBP at Brilliant Earth · As of October 21, 2026
View at Brilliant Earth

About this 1.03ct lab-grown round diamond

This 1.03ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG720539045 or 720539045. Listed at 24 retailers as of October 28, 2026, with a 499% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG720539045
Dimensions6.53 × 6.52 × 3.94 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
6.53 mm6.52 mm1.03 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG720539045
Side View
Table 58.0%Crown 33.2°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £991 GBP|Low: £149 GBP|High: £991 GBP|Avg: £405 GBP
Brilliant Earth
Retailer 2
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October 29, 2026
Retailer 5£149 GBP
Retailer 14£166 GBP
Retailer 21£173 GBP
Retailer 3£184 GBP
Retailer 20£184 GBP
Retailer 7£249 GBP
Retailer 13£299 GBP
Retailer 16£310 GBP
Retailer 18£316 GBP
Retailer 2£335 GBP
Retailer 11£363 GBP
Retailer 6£364 GBP
Retailer 15£404 GBP
Retailer 22£445 GBP
Retailer 19£451 GBP
Retailer 10£502 GBP
Retailer 17£585 GBP
Retailer 4£592 GBP
Retailer 12£633 GBP
Retailer 9£866 GBP
Retailer 8£891 GBP
Brilliant Earth£991 GBP

27 data points across 22 retailers

24 retailers£149 GBP to £891 GBP

A
Cheapest Retailer
-
£149 GBP
$198 USD
A
Retailer 2
-
£166 GBP
$221 USD
View
Final sale: no returns
A
Retailer 3
-
£173 GBP
$230 USD
View
A
Retailer 4
-
£184 GBP
$245 USD
View
A
Retailer 5
-
£184 GBP
$245 USD
View
A
Retailer 6
-
£211 GBP
HK$2,200 HKD
View
A
Retailer 7
-
£249 GBP
$332 USD
View
A
Retailer 8
-
£299 GBP
View
A
Retailer 9
-
£310 GBP
€393 EUR
View
A
Retailer 10
-
£316 GBP
ZAR 6,808 ZAR
View
A
Retailer 11
-
£335 GBP
View
A
Retailer 12
-
£363 GBP
$483 USD
View
A
Retailer 13
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£364 GBP
$485 USD
View
B+
Retailer 14
-
£404 GBP
A$828 AUD
View
Retailer 15
-
£445 GBP
$592 USD
View
Price last confirmed 8 days ago
B+
Retailer 16
-
£451 GBP
A$923 AUD
View
B+
Retailer 17
-
£472 GBP
$629 USD
View
B+
Retailer 18
-
£502 GBP
SGD 903 SGD
View
B+
Retailer 19
-
£585 GBP
A$1,199 AUD
View
B+
Retailer 20
-
£592 GBP
$789 USD
View
B+
Retailer 21
-
£633 GBP
$842 USD
View
B
Retailer 22
-
£866 GBP
View
B
Retailer 23
-
£891 GBP
$1,187 USD
View
Most Expensive
Brilliant Earth
15534529A · Oct 21
£991 GBP
$1,320 USD
View
Price last confirmed 8 days ago
23 more retailers have this diamond
Prices start from £149 GBPSave up to £743 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
1.03ct Round
£149 GBP