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Heart|Lab Grown|IGI

3.03ct F SI1 Heart Lab Grown Diamond

ID • F/SI1 • IGI LG674508970

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG674508970

Diamond specifications and retailer prices

From £611 GBP
As of October 30, 2026
Save £315 GBP (34%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,920 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.03ct lab-grown heart diamond

This 3.03ct lab-grown heart sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG674508970 or 674508970. Listed at 15 retailers as of October 30, 2026, with a 52% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.03
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.1°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG674508970
Dimensions9.07 × 10.03 × 5.68 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.07 mm10.03 mm3.03 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG674508970
Side View
Table 62.0%Crown 38.1°Girdle: MED-STKPavilion 37.7°Culet: NoneDepth 56.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £1,920 GBP|Low: £299 GBP|High: £1,980 GBP|Avg: £770 GBP|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 4, 2026
Retailer 9£312 GBP
Retailer 3£349 GBP
Retailer 10£386 GBP
Retailer 6£497 GBP
Retailer 8£519 GBP
Retailer 11£611 GBP
Retailer 2£615 GBP
Retailer 4£635 GBP
Retailer 7£926 GBP
Retailer 5£1,425 GBP
Brilliant Earth£1,920 GBP

41 data points across 11 retailers

15 retailers£611 GBP to £926 GBP

Retailer 1
-
£312 GBP
Price last confirmed 7 days ago
Retailer 2
-
£349 GBP
View
Price last confirmed 9 days ago
Retailer 3
-
£386 GBP
View
Price last confirmed 12 days ago
Retailer 4
-
£386 GBP
View
Price last confirmed 8 days ago
Retailer 5
-
£497 GBP
View
Price last confirmed 6 days ago
Retailer 6
-
£519 GBP
View
Price last confirmed 7 days ago
A
Retailer 7
-
£611 GBP
View
A
Retailer 8
-
£615 GBP
View
Retailer 9
-
£635 GBP
View
Price last confirmed 7 days ago
B+
Retailer 10
-
£770 GBP
View
B+
Retailer 11
-
£926 GBP
View
Retailer 12
-
£1,241 GBP
View
Price last confirmed 8 days ago
Retailer 13
-
£1,266 GBP
View
Price last confirmed 8 days ago
Retailer 14
-
£1,425 GBP
View
Price last confirmed 8 days ago
Most Expensive
Brilliant Earth
14085720A · Oct 30
£1,920 GBP
$2,570 USD
View
Price last confirmed 7 days ago
14 more retailers have this diamond
Prices start from £611 GBPSave up to £315 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
3.03ct Heart
£611 GBP