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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 $752 NZD
$424 USD
As of October 25, 2026
Save $3,098 NZD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,850 NZD 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 $752 to $3,850, a $3,098 spread on the same certified stone. Brilliant Earth lists it at $3,850. 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: $3,850 NZD|Low: $743 NZD|High: $7,505 NZD|Avg: $2,181 NZD|-48.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 8$743 NZD
Retailer 4$752 NZD
Retailer 6$1,011 NZD
Retailer 7$1,214 NZD
Retailer 2$1,351 NZD
Retailer 9$1,478 NZD
Retailer 10$2,030 NZD
Retailer 5$2,207 NZD
Retailer 3$3,033 NZD
Brilliant Earth$3,850 NZD

34 data points across 10 retailers

11 retailers$752 NZD to $3,850 NZD

Retailer 1
-
$743 NZD
$419 USD
Price last confirmed 34 days ago
Retailer 2
-
$752 NZD
$424 USD
View
Price last confirmed 19 days ago
A
Retailer 3
-
$752 NZD
$424 USD
View
Retailer 4
-
$1,011 NZD
£449 GBP
View
Price last confirmed 14 days ago
B+
Retailer 5
-
$1,214 NZD
$684 USD
View
A
Retailer 6
-
$1,351 NZD
£600 GBP
View
A
Retailer 7
-
$1,478 NZD
$833 USD
View
B+
Retailer 8
-
$2,030 NZD
$1,144 USD
View
B+
Retailer 9
-
$2,207 NZD
$1,244 USD
View
B+
Retailer 10
-
$3,033 NZD
£1,346 GBP
View
Most Expensive
B
Brilliant Earth
11351420A · Oct 30
$3,850 NZD
$2,170 USD
View
10 more retailers have this diamond
Prices start from $752 NZDSave up to $3,098 NZD

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
$752 NZD