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Round|Lab Grown|UNKNOWN

0.40ct F SI2 Round Lab Grown Diamond

EX • F/SI2 • UNKNOWN 3524102410

Certificate UNKNOWN 3524102410

Diamond specifications and retailer prices

From $280 AUD
$197 USD
As of November 1, 2026
Save $839 AUD (75%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,119 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 UNKNOWN 3524102410. Listed at 5 retailers as of October 30, 2026, with prices from $280 to $1,119, a $839 spread on the same certified stone. NZ Jewellers lists it at $1,119. 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 LabUNKNOWN
CertificateUNKNOWN 3524102410
Dimensions4.69 × 4.66 × 2.93 mm
L/W Ratio1.01
Top View
4.69 mm4.66 mm0.40 ctF / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateUNKNOWN 3524102410
Side View
Table 54.7%CrownGirdlePavilionCuletDepth 62.8%

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: Nov 1
Current: $280 AUD|Low: $269 AUD|High: $606 AUD|Avg: $395 AUD|+4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 10, 2026
Retailer 1$280 AUD
Retailer 4$326 AUD
Retailer 2$347 AUD
Retailer 3$606 AUD

4 data points across 4 retailers

5 retailers$280 AUD to $1,119 AUD

A
Cheapest Retailer
-
$280 AUD
$197 USD
B+
Retailer 2
-
$326 AUD
$229 USD
View
B+
Retailer 3
-
$347 AUD
$244 USD
View
B
Retailer 4
-
$606 AUD
$426 USD
View
Most Expensive
C
NZ Jewellers
35bd486d-3181-4c3e-a9fc-b1b2f16b25db · Oct 30
$1,119 AUD
$786 USD
View
4 more retailers have this diamond
Prices start from $280 AUDSave up to $839 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
0.40ct Round
$280 AUD