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Round|Lab Grown|IGI

1.03ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG729569773

Shape and cutting style on the report: Round brilliant

Certificate IGI LG729569773

Diamond specifications and retailer prices

From £159 GBP
As of November 5, 2026
Save £870 GBP (85%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,267 GBP at Brilliant Earth · As of October 22, 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 F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG729569773 or 729569773. Listed at 23 retailers as of November 3, 2026, with a 547% 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
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729569773
Dimensions6.41 × 6.48 × 3.98 mm
L/W Ratio1.01
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
6.41 mm6.48 mm1.03 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729569773
Side View
Table 57.0%Crown 35.6°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.7%

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: Nov 5
Current: £1,030 GBP|Low: £159 GBP|High: £1,370 GBP|Avg: £480 GBP|-24.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 5, 2026
Retailer 3£159 GBP
Retailer 7£170 GBP
Retailer 4£239 GBP
Retailer 10£301 GBP
Retailer 12£304 GBP
Retailer 2£317 GBP
Retailer 5£350 GBP
Retailer 16£353 GBP
Retailer 13£399 GBP
Retailer 14£424 GBP
Retailer 11£430 GBP
Retailer 15£540 GBP
Retailer 6£607 GBP
Retailer 8£670 GBP
Retailer 9£823 GBP
Brilliant Earth£1,030 GBP

42 data points across 16 retailers

23 retailers£159 GBP to £1,030 GBP

Retailer 1
-
£147 GBP
Price last confirmed 18 days ago
A
Retailer 2
-
£159 GBP
View
Final sale: no returns
Retailer 3
-
£170 GBP
View
Price last confirmed 16 days ago
Retailer 4
-
£182 GBP
View
Price last confirmed 20 days ago
Retailer 5
-
£182 GBP
View
Price last confirmed 17 days ago
Retailer 6
-
£184 GBP
View
Price last confirmed 51 days ago
A
Retailer 7
-
£239 GBP
View
A
Retailer 8
-
£301 GBP
View
A
Retailer 9
-
£304 GBP
View
A
Retailer 10
-
£317 GBP
View
B+
Retailer 11
-
£350 GBP
View
B+
Retailer 12
-
£353 GBP
View
B+
Retailer 13
-
£399 GBP
View
B+
Retailer 14
-
£424 GBP
View
B+
Retailer 15
-
£430 GBP
View
Retailer 16
-
£450 GBP
View
Price last confirmed 8 days ago
Retailer 17
-
£540 GBP
View
Price last confirmed 8 days ago
Retailer 18
-
£585 GBP
View
Price last confirmed 18 days ago
B+
Retailer 19
-
£607 GBP
View
Retailer 20
-
£670 GBP
View
Price last confirmed 29 days ago
B
Retailer 21
-
£823 GBP
View
B
Retailer 22
-
£1,030 GBP
View
Most Expensive
Brilliant Earth
16131409A · Oct 22
£1,267 GBP
$1,710 USD
View
Price last confirmed 13 days ago
22 more retailers have this diamond
Prices start from £159 GBPSave up to £870 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
£159 GBP