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Heart|Lab Grown|IGI

4.09ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG715586778

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG715586778

Diamond specifications and retailer prices

From £354 GBP
$474 USD
As of October 30, 2026
Save £1,057 GBP (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,411 GBP at NZ Jewellers · As of October 29, 2026
View at NZ Jewellers

About this 4.09ct lab-grown heart diamond

This 4.09ct lab-grown heart sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG715586778 or 715586778. Listed at 11 retailers as of October 29, 2026, with prices from £354 to £1,411, a £1,057 spread on the same certified stone. NZ Jewellers lists it at £1,411. 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

4.09
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG715586778
Dimensions10.10 × 11.39 × 6.25 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.10 mm11.39 mm4.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG715586778
Side View
Table 63.0%Crown 34°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 54.9%

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: £1,411 GBP|Low: £354 GBP|High: £5,038 GBP|Avg: £1,135 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 3£354 GBP
Retailer 2£367 GBP
Retailer 13£396 GBP
Retailer 7£439 GBP
Retailer 10£487 GBP
Retailer 8£545 GBP
Retailer 12£684 GBP
Retailer 9£695 GBP
Retailer 6£728 GBP
Retailer 4£1,011 GBP
Retailer 11£1,060 GBP
NZ Jewellers£1,411 GBP
Retailer 5£5,038 GBP

4 data points across 13 retailers

11 retailers£354 GBP to £1,411 GBP

A
Cheapest Retailer
-
£354 GBP
$474 USD
A
Retailer 2
-
£367 GBP
View
A
Retailer 3
-
£396 GBP
$531 USD
View
A
Retailer 4
-
£439 GBP
$588 USD
View
A
Retailer 5
-
£487 GBP
HK$5,100 HKD
View
A
Retailer 6
-
£545 GBP
$730 USD
View
B+
Retailer 7
-
£684 GBP
$917 USD
View
B+
Retailer 8
-
£695 GBP
$931 USD
View
B+
Retailer 9
-
£728 GBP
View
B
Retailer 10
-
£1,060 GBP
$1,420 USD
View
Most Expensive
B
NZ Jewellers
dfef6dcb-7db5-4b81-9bbe-af8b7300ad88 · Oct 29
£1,411 GBP
$1,890 USD
View
10 more retailers have this diamond
Prices start from £354 GBPSave up to £1,057 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
4.09ct Heart
£354 GBP