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Heart|Lab Grown|IGI

3.46ct E SI2 Heart Lab Grown Diamond

EX • E/SI2 • IGI LG645423291

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG645423291

Diamond specifications and retailer prices

From $604 AUD
$424 USD
As of October 25, 2026
Save $2,486 AUD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,089 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.46ct lab-grown heart diamond

This 3.46ct lab-grown heart sits in the three to five carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG645423291 or 645423291. Listed at 11 retailers as of October 25, 2026, with prices from $604 to $3,089, a $2,486 spread on the same certified stone. Brilliant Earth lists it at $3,089. 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

3.46
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645423291
Dimensions9.25 × 10.69 × 6.15 mm
L/W Ratio1.16
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.25 mm10.69 mm3.46 ctE / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645423291
Side View
Table 60.0%Crown 34.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 57.5%

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 25
Current: $3,089 AUD|Low: $596 AUD|High: $6,022 AUD|Avg: $1,768 AUD|-48.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 8$596 AUD
Retailer 4$604 AUD
Retailer 6$811 AUD
Retailer 7$974 AUD
Retailer 2$1,082 AUD
Retailer 9$1,186 AUD
Retailer 10$1,629 AUD
Retailer 5$1,771 AUD
Retailer 3$2,434 AUD
Brilliant Earth$3,089 AUD

34 data points across 10 retailers

11 retailers$604 AUD to $3,089 AUD

Retailer 1
-
$596 AUD
$419 USD
Price last confirmed 33 days ago
Retailer 2
-
$604 AUD
$424 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
$604 AUD
$424 USD
View
Retailer 4
-
$811 AUD
£449 GBP
View
Price last confirmed 13 days ago
B+
Retailer 5
-
$974 AUD
$684 USD
View
A
Retailer 6
-
$1,082 AUD
£598 GBP
View
A
Retailer 7
-
$1,186 AUD
$833 USD
View
B+
Retailer 8
-
$1,629 AUD
$1,144 USD
View
B+
Retailer 9
-
$1,771 AUD
$1,244 USD
View
B+
Retailer 10
-
$2,434 AUD
£1,346 GBP
View
Most Expensive
B
Brilliant Earth
11351420A · Oct 30
$3,089 AUD
$2,170 USD
View
10 more retailers have this diamond
Prices start from $604 AUDSave up to $2,486 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
3.46ct Heart
$604 AUD