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Radiant|Lab Grown|IGI

6.40ct E VS1 Radiant Lab Grown Diamond

EX • E/VS1 • IGI LG838655608

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

Certificate IGI LG838655608

Diamond specifications and retailer prices

From $1,612 AUD
$1,132 USD
As of October 29, 2026
Save $9,507 AUD (86%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $11,118 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 6.4ct lab-grown radiant diamond

This 6.4ct lab-grown radiant sits in the over five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG838655608 or 838655608. Listed at 3 retailers as of October 29, 2026, with prices from $1,612 to $11,118, a $9,507 spread on the same certified stone. Brilliant Earth lists it at $11,118. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

6.40
Carat
E
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.3°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838655608
Dimensions13.23 × 9.26 × 6.11 mm
L/W Ratio1.43
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.23 mm9.26 mm6.40 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838655608
Side View
Table 66.0%Crown 42.3°Girdle: MED-STKPavilion 37°Culet: NoneDepth 66.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $11,118 AUD|Low: $1,612 AUD|High: $20,984 AUD|Avg: $8,984 AUD|-47.0%
Brilliant Earth
Retailer 2
Retailer 3
October 30, 2026
Retailer 3$1,612 AUD
Retailer 2$2,465 AUD
Brilliant Earth$11,118 AUD

29 data points across 3 retailers

3 retailers$1,612 AUD to $11,118 AUD

A
Cheapest Retailer
-
$1,612 AUD
$1,132 USD
Final sale: no returns
A
Retailer 2
-
$2,465 AUD
£1,363 GBP
View
Most Expensive
B
Brilliant Earth
21552716A · Oct 30
$11,118 AUD
$7,810 USD
View
2 more retailers have this diamond
Prices start from $1,612 AUDSave up to $9,507 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
6.40ct Radiant
$1,612 AUD