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Radiant|Lab Grown|IGI

4.06ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG817680753

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

Certificate IGI LG817680753

Diamond specifications and retailer prices

From $1,348 AUD
€902 EUR
As of October 23, 2026
Save $7,377 AUD (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,725 AUD at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 4.06ct lab-grown radiant diamond

This 4.06ct 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 LG817680753 or 817680753. Listed at 14 retailers as of October 23, 2026, with prices from $1,348 to $8,725, a $7,377 spread on the same certified stone. Brilliant Earth lists it at $8,725. 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

4.06
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle27.2°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817680753
Dimensions11.40 × 7.85 × 5.10 mm
L/W Ratio1.45
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.40 mm7.85 mm4.06 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817680753
Side View
Table 58.0%Crown 27.2°Girdle: ThickPavilion 33.9°Culet: NoneDepth 65.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 23
Current: $8,725 AUD|Low: $547 AUD|High: $8,996 AUD|Avg: $2,219 AUD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 23, 2026
Retailer 7$650 AUD
Retailer 10$677 AUD
Retailer 14$729 AUD
Retailer 6$807 AUD
Retailer 13$807 AUD
Retailer 15$1,082 AUD
Retailer 11$1,217 AUD
Retailer 8$1,326 AUD
Retailer 2$1,348 AUD
Retailer 5$1,987 AUD
Retailer 12$2,168 AUD
Retailer 4$2,637 AUD
Retailer 3$2,733 AUD
Retailer 9$2,979 AUD
Brilliant Earth$8,725 AUD

35 data points across 15 retailers

14 retailers$1,348 AUD to $8,725 AUD

Retailer 1
-
$650 AUD
$457 USD
Price last confirmed 10 days ago
Retailer 2
-
$677 AUD
£374 GBP
View
Price last confirmed 12 days ago
Retailer 3
-
$807 AUD
$567 USD
View
Price last confirmed 13 days ago
Retailer 4
-
$807 AUD
$567 USD
View
Price last confirmed 10 days ago
Retailer 5
-
$1,082 AUD
$760 USD
View
Price last confirmed 8 days ago
Retailer 6
-
$1,217 AUD
$855 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$1,326 AUD
£734 GBP
View
Price last confirmed 9 days ago
A
Retailer 8
-
$1,348 AUD
€902 EUR
View
Retailer 9
-
$1,987 AUD
$1,396 USD
View
Price last confirmed 8 days ago
Retailer 10
-
$2,168 AUD
$1,523 USD
View
Price last confirmed 8 days ago
Retailer 11
-
$2,637 AUD
$1,853 USD
View
Price last confirmed 8 days ago
Retailer 12
-
$2,733 AUD
$1,920 USD
View
Price last confirmed 8 days ago
Retailer 13
-
$2,979 AUD
£1,648 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
20907183A · Oct 26
$8,725 AUD
$6,130 USD
View
13 more retailers have this diamond
Prices start from $1,348 AUDSave up to $7,377 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
4.06ct Radiant
$1,348 AUD