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Round|Lab Grown|IGI

0.40ct F SI2 Round Lab Grown Diamond

EX • F/SI2 • IGI LG290500

Certificate IGI LG290500

Diamond specifications and retailer prices

From $569 AUD
$400 USD
As of October 31, 2026
Save $471 AUD (45%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,041 AUD at Fonder Diamond · As of October 31, 2026
View at Fonder Diamond

About this 0.4ct lab-grown round diamond

This 0.4ct lab-grown round sits in the sub-half-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG290500 or 290500. Listed at 2 retailers as of October 31, 2026, with prices from $569 to $1,041, a $471 spread on the same certified stone. Fonder Diamond lists it at $1,041. 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

0.40
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG290500
Dimensions4.73 × 4.71 × 2.90 mm
L/W Ratio1.00
Top View
4.73 mm4.71 mm0.40 ctF / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG290500
Side View
Table 60.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $1,041 AUD|Low: $569 AUD|High: $2,298 AUD|Avg: $1,064 AUD|-0.4%
Fonder Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 13, 2026
Retailer 2$569 AUD
Retailer 3$704 AUD
Retailer 5$783 AUD
Retailer 6$984 AUD
Fonder Diamond$1,041 AUD
Retailer 4$2,298 AUD

4 data points across 6 retailers

2 retailers$569 AUD to $1,041 AUD

B+
Cheapest Retailer
-
$569 AUD
$400 USD
Most Expensive
B
Fonder Diamond
96961304 · Oct 31
$1,041 AUD
SGD 988 SGD
View
1 more retailer has this diamond
Prices start from $569 AUDSave up to $471 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.

B+
0.40ct Round
$569 AUD