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Round|Lab Grown|IGI

1.03ct D FL Round Lab Grown Diamond

EX • D/FL • IGI LG834601307

Shape and cutting style on the report: Round brilliant

Certificate IGI LG834601307

Diamond specifications and retailer prices

From £209 GBP
$278 USD
As of October 29, 2026
Save £1,522 GBP (88%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £1,731 GBP at Brilliant Earth · As of October 28, 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG834601307 or 834601307. Listed at 26 retailers as of October 28, 2026, with prices from £209 to £1,731, a £1,522 spread on the same certified stone. Brilliant Earth lists it at £1,731. 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
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG834601307
Dimensions6.57 × 6.50 × 3.94 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
6.57 mm6.50 mm1.03 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG834601307
Side View
Table 61.0%Crown 35.1°Girdle: MediumPavilion 40.9°Culet: NoneDepth 60.2%

Caratlytics Score

How it works →
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: £1,731 GBP|Low: £167 GBP|High: £1,784 GBP|Avg: £653 GBP|-3.0%
Brilliant Earth
Retailer 2
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Retailer 22
October 29, 2026
Retailer 21£209 GBP
Retailer 3£243 GBP
Retailer 9£254 GBP
Retailer 5£260 GBP
Retailer 22£260 GBP
Retailer 19£399 GBP
Retailer 13£411 GBP
Retailer 20£412 GBP
Retailer 14£416 GBP
Retailer 18£434 GBP
Retailer 16£446 GBP
Retailer 17£454 GBP
Retailer 8£549 GBP
Retailer 6£835 GBP
Retailer 12£873 GBP
Retailer 7£903 GBP
Retailer 11£905 GBP
Retailer 2£1,047 GBP
Retailer 10£1,068 GBP
Retailer 15£1,086 GBP
Retailer 4£1,457 GBP
Brilliant Earth£1,731 GBP

40 data points across 22 retailers

26 retailers£209 GBP to £1,731 GBP

A
Retailer 1
-
£209 GBP
$278 USD
Price last confirmed 37 days ago
A
Retailer 2
-
£209 GBP
$278 USD
View
A
Retailer 3
-
£243 GBP
$323 USD
View
Price last confirmed 39 days ago
A
Retailer 4
-
£243 GBP
$323 USD
View
A
Retailer 5
-
£254 GBP
$338 USD
View
Final sale: no returns
A
Retailer 6
-
£257 GBP
$341 USD
View
Price last confirmed 37 days ago
A
Retailer 7
-
£260 GBP
$345 USD
View
A
Retailer 8
-
£260 GBP
$345 USD
View
A
Retailer 9
-
£399 GBP
$530 USD
View
A
Retailer 10
-
£411 GBP
€520 EUR
View
A
Retailer 11
-
£412 GBP
$548 USD
View
B+
Retailer 12
-
£416 GBP
$553 USD
View
B+
Retailer 13
-
£434 GBP
$577 USD
View
B+
Retailer 14
-
£446 GBP
ZAR 9,581 ZAR
View
B+
Retailer 15
-
£454 GBP
View
B+
Retailer 16
-
£549 GBP
$730 USD
View
B
Retailer 17
-
£835 GBP
$1,110 USD
View
B
Retailer 18
-
£835 GBP
$1,110 USD
View
Price last confirmed 38 days ago
B
Retailer 19
-
£873 GBP
$1,160 USD
View
B
Retailer 20
-
£905 GBP
CA$1,670 CAD
View
B
Retailer 21
-
£921 GBP
$1,224 USD
View
B
Retailer 22
-
£1,047 GBP
View
B
Retailer 23
-
£1,068 GBP
$1,419 USD
View
B
Retailer 24
-
£1,086 GBP
$1,444 USD
View
B
Retailer 25
-
£1,457 GBP
$1,936 USD
View
Most Expensive
B
Brilliant Earth
21455129A · Oct 28
£1,731 GBP
$2,300 USD
View
25 more retailers have this diamond
Prices start from £209 GBPSave up to £1,522 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
£209 GBP