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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 $971 AUD
£537 GBP
As of October 27, 2026
Save $3,603 AUD (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $10,419 AUD at Brilliant Earth · As of October 29, 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 11 retailers as of October 26, 2026, with a 371% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $971 AUD|Low: $967 AUD|High: $4,574 AUD|Avg: $2,139 AUD|+0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 27, 2026
Retailer 1$971 AUD
Retailer 10$1,046 AUD
Retailer 6$1,257 AUD
Retailer 8$1,338 AUD
Retailer 3$1,723 AUD
Retailer 4$1,768 AUD
Retailer 7$2,770 AUD
Retailer 9$3,089 AUD
Retailer 2$3,659 AUD
Retailer 5$4,574 AUD

6 data points across 10 retailers

11 retailers$971 AUD to $4,574 AUD

A
Cheapest Retailer
-
$971 AUD
£537 GBP
A
Retailer 2
-
$1,046 AUD
$735 USD
View
Final sale: no returns
B+
Retailer 3
-
$1,257 AUD
HK$6,900 HKD
View
B+
Retailer 4
-
$1,338 AUD
$940 USD
View
B+
Retailer 5
-
$1,723 AUD
£953 GBP
View
B+
Retailer 6
-
$1,768 AUD
$1,242 USD
View
B
Retailer 7
-
$2,770 AUD
$1,946 USD
View
B
Retailer 8
-
$3,089 AUD
$2,170 USD
View
B
Retailer 9
-
$3,659 AUD
SGD 3,474 SGD
View
B
Retailer 10
-
$4,574 AUD
£2,530 GBP
View
Most Expensive
Brilliant Earth
22235130A · Oct 29
$10,419 AUD
$7,320 USD
View
Price under review
10 more retailers have this diamond
Prices start from $971 AUDSave up to $3,603 AUD

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
$971 AUD