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Heart|Lab Grown|IGI

4.90ct E SI1 Heart Lab Grown Diamond

VG • E/SI1 • IGI LG843671405

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG843671405

Diamond specifications and retailer prices

From £509 GBP
As of October 27, 2026
Save £2,387 GBP (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,896 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4.9ct lab-grown heart diamond

This 4.9ct lab-grown heart sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG843671405 or 843671405. Listed at 10 retailers as of October 27, 2026, with prices from £509 to £2,896, a £2,387 spread on the same certified stone. Brilliant Earth lists it at £2,896. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.90
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843671405
Dimensions10.24 × 11.90 × 6.77 mm
L/W Ratio1.16
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.24 mm11.90 mm4.90 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843671405
Side View
Table 64.0%Crown 34.2°Girdle: STK-VTKPavilion 37.8°Culet: NoneDepth 56.9%

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 27
Current: £2,896 GBP|Low: £507 GBP|High: £2,896 GBP|Avg: £1,158 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2£509 GBP
Retailer 11£549 GBP
Retailer 7£659 GBP
Retailer 9£702 GBP
Retailer 4£903 GBP
Retailer 5£927 GBP
Retailer 8£1,452 GBP
Retailer 10£1,620 GBP
Retailer 3£1,919 GBP
Retailer 6£2,398 GBP
Brilliant Earth£2,896 GBP

7 data points across 11 retailers

10 retailers£509 GBP to £2,896 GBP

A
Cheapest Retailer
-
£509 GBP
B+
Retailer 2
-
£659 GBP
HK$6,900 HKD
View
B+
Retailer 3
-
£702 GBP
$940 USD
View
B+
Retailer 4
-
£903 GBP
View
B+
Retailer 5
-
£927 GBP
$1,242 USD
View
B
Retailer 6
-
£1,452 GBP
$1,946 USD
View
B
Retailer 7
-
£1,620 GBP
$2,170 USD
View
B
Retailer 8
-
£1,919 GBP
SGD 3,474 SGD
View
B
Retailer 9
-
£2,398 GBP
View
Most Expensive
B
Brilliant Earth
22235130A · Oct 30
£2,896 GBP
$3,880 USD
View
9 more retailers have this diamond
Prices start from £509 GBPSave up to £2,387 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
4.90ct Heart
£509 GBP