Round|Lab Grown|IGI

1.03ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG761552450

Shape and cutting style on the report: Round brilliant

Certificate IGI LG761552450

Diamond specifications and retailer prices

From £194 GBP
$260 USD
As of October 30, 2026
Save £776 GBP (80%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,612 GBP at Brilliant Earth · As of September 23, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG761552450 or 761552450. Listed at 24 retailers as of October 30, 2026, with a 400% 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
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG761552450
Dimensions6.42 × 6.45 × 4.00 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
6.42 mm6.45 mm1.03 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG761552450
Side View
Table 56.0%Crown 36.1°Girdle: MediumPavilion 40.5°Culet: NoneDepth 62.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £873 GBP|Low: £166 GBP|High: £1,560 GBP|Avg: £487 GBP|-37.8%
Brilliant Earth
Retailer 2
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October 30, 2026
Retailer 6£174 GBP
Retailer 11£194 GBP
Retailer 21£202 GBP
Retailer 3£216 GBP
Retailer 14£216 GBP
Retailer 10£291 GBP
Retailer 2£343 GBP
Retailer 16£355 GBP
Retailer 18£371 GBP
Retailer 9£390 GBP
Retailer 5£401 GBP
Retailer 13£406 GBP
Retailer 22£431 GBP
Retailer 19£526 GBP
Retailer 4£566 GBP
Retailer 15£582 GBP
Retailer 7£694 GBP
Retailer 17£710 GBP
Retailer 8£733 GBP
Retailer 20£870 GBP
Brilliant Earth£873 GBP
Retailer 12£970 GBP

31 data points across 22 retailers

24 retailers£194 GBP to £970 GBP

Retailer 1
-
£174 GBP
$233 USD
Price last confirmed 12 days ago
A
Retailer 2
-
£194 GBP
$260 USD
View
Final sale: no returns
Retailer 3
-
£202 GBP
$271 USD
View
Price last confirmed 10 days ago
Retailer 4
-
£216 GBP
$289 USD
View
Price last confirmed 14 days ago
Retailer 5
-
£216 GBP
$289 USD
View
Price last confirmed 11 days ago
A
Retailer 6
-
£239 GBP
HK$2,500 HKD
View
A
Retailer 7
-
£291 GBP
$390 USD
View
A
Retailer 8
-
£343 GBP
View
A
Retailer 9
-
£355 GBP
€453 EUR
View
A
Retailer 10
-
£371 GBP
ZAR 8,028 ZAR
View
A
Retailer 11
-
£390 GBP
$522 USD
View
A
Retailer 12
-
£401 GBP
$537 USD
View
B+
Retailer 13
-
£406 GBP
View
B+
Retailer 14
-
£431 GBP
A$888 AUD
View
B+
Retailer 15
-
£526 GBP
A$1,085 AUD
View
B+
Retailer 16
-
£566 GBP
$759 USD
View
B+
Retailer 17
-
£582 GBP
SGD 1,054 SGD
View
Retailer 18
-
£694 GBP
$930 USD
View
Price last confirmed 12 days ago
B+
Retailer 19
-
£710 GBP
A$1,463 AUD
View
B+
Retailer 20
-
£733 GBP
$982 USD
View
Retailer 21
-
£870 GBP
View
Price last confirmed 9 days ago
B
Retailer 22
-
£873 GBP
$1,170 USD
View
B
Retailer 23
-
£970 GBP
$1,300 USD
View
Most Expensive
Brilliant Earth
20709026A · Sep 23
£1,612 GBP
$2,160 USD
View
Price last confirmed 37 days ago
23 more retailers have this diamond
Prices start from £194 GBPSave up to £776 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
£194 GBP