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Heart|Lab Grown|IGI

4.03ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG846663578

Certificate IGI LG846663578

Diamond specifications and retailer prices

From £3,137 GBP
As of October 30, 2026
Save £14,413 GBP (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £17,551 GBP at With Clarity · As of October 30, 2026
View at With Clarity

About this 4.03ct lab-grown heart diamond

This 4.03ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG846663578 or 846663578. Listed at 10 retailers as of October 30, 2026, with prices from £3,137 to £17,551, a £14,413 spread on the same certified stone. With Clarity lists it at £17,551. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.03
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG846663578
Dimensions10.18 × 10.75 × 6.38 mm
L/W Ratio1.06
Top View
10.18 mm10.75 mm4.03 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846663578
Side View
Table 57.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £4,887 GBP|Low: £3,137 GBP|High: £17,551 GBP|Avg: £8,343 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
With Clarity
October 31, 2026
Retailer 3£3,137 GBP
Retailer 4£3,788 GBP
Retailer 8£4,497 GBP
Retailer 7£4,693 GBP
Retailer 1£4,887 GBP
Retailer 9£7,573 GBP
Retailer 5£7,818 GBP
Retailer 6£8,268 GBP
Retailer 2£13,076 GBP
With Clarity£17,551 GBP

6 data points across 10 retailers

10 retailers£3,137 GBP to £17,551 GBP

A
Cheapest Retailer
-
£3,137 GBP
A
Retailer 2
-
£3,788 GBP
$5,075 USD
View
A
Retailer 3
-
£4,497 GBP
$6,026 USD
View
A
Retailer 4
-
£4,693 GBP
$6,288 USD
View
Retailer 5
-
£4,887 GBP
$6,548 USD
View
B+
Retailer 6
-
£7,573 GBP
€9,664 EUR
View
B+
Retailer 7
-
£7,818 GBP
View
B+
Retailer 8
-
£8,268 GBP
$11,078 USD
View
B+
Retailer 9
-
£13,076 GBP
$17,520 USD
View
Most Expensive
B
With Clarity
846663578 · Oct 30
£17,551 GBP
$23,516 USD
View
9 more retailers have this diamond
Prices start from £3,137 GBPSave up to £14,413 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
4.03ct Heart
£3,137 GBP