Radiant|Lab Grown|IGI

3.46ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG678530543

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG678530543

Diamond specifications and retailer prices

From $418 USD
As of October 27, 2026
Save $4,772 USD (92%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,190 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.46ct lab-grown radiant diamond

This 3.46ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG678530543 or 678530543. Listed at 10 retailers as of October 27, 2026, with prices from $418 to $5,190, a $4,772 spread on the same certified stone. Brilliant Earth lists it at $5,190. 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.1°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678530543
Dimensions10.74 × 7.42 × 5.00 mm
L/W Ratio1.45
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.74 mm7.42 mm3.46 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG678530543
Side View
Table 65.0%Crown 44.1°Girdle: MediumPavilion 35.2°Culet: NoneDepth 67.4%

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: $5,190 USD|Low: $665 USD|High: $5,350 USD|Avg: $2,249 USD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 28, 2026
Retailer 7$817 USD
Retailer 2$820 USD
Retailer 4$1,454 USD
Retailer 8$1,521 USD
Retailer 6$1,840 USD
Retailer 3$2,104 USD
Retailer 5$3,710 USD
Brilliant Earth$5,190 USD

15 data points across 8 retailers

10 retailers$418 USD to $5,190 USD

A
Cheapest Retailer
-
$418 USD
B+
Retailer 2
-
$817 USD
View
B+
Retailer 3
-
$820 USD
View
B+
Retailer 4
-
$1,454 USD
View
B+
Retailer 5
-
$1,521 USD
View
B+
Retailer 6
-
$1,840 USD
View
B+
Retailer 7
-
$2,104 USD
£1,657 GBP
View
B
Retailer 8
-
$3,710 USD
View
B
Retailer 9
-
$4,192 USD
£3,301 GBP
View
Most Expensive
B
Brilliant Earth
13131195Y · Oct 29
$5,190 USD
View
9 more retailers have this diamond
Prices start from $418 USDSave up to $4,772 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 Radiant
$418 USD