CaratHunter
Plans
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 $424 USD
As of October 25, 2026
Save $3,676 USD (90%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,100 USD at Brilliant Earth · As of October 28, 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 $424 to $4,100, a $3,676 spread on the same certified stone. Brilliant Earth lists it at $4,100. 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
Color
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: $4,100 USD|Low: $419 USD|High: $4,230 USD|Avg: $1,249 USD|-3.1%
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$419 USD
Retailer 4$424 USD
Retailer 6$570 USD
Retailer 7$684 USD
Retailer 2$760 USD
Retailer 9$833 USD
Retailer 10$1,144 USD
Retailer 5$1,244 USD
Retailer 3$1,709 USD
Brilliant Earth$4,100 USD

34 data points across 10 retailers

11 retailers$424 USD to $4,100 USD

Retailer 1
-
$419 USD
Price last confirmed 32 days ago
Retailer 2
-
$424 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
$424 USD
View
Retailer 4
-
$570 USD
£449 GBP
View
Price last confirmed 13 days ago
B+
Retailer 5
-
$684 USD
View
A
Retailer 6
-
$760 USD
£598 GBP
View
A
Retailer 7
-
$833 USD
View
B+
Retailer 8
-
$1,144 USD
View
B+
Retailer 9
-
$1,244 USD
View
B+
Retailer 10
-
$1,709 USD
£1,346 GBP
View
Most Expensive
B
Brilliant Earth
11351420A · Oct 28
$4,100 USD
View
10 more retailers have this diamond
Prices start from $424 USDSave up to $3,676 USD

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
$424 USD