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Oval|Natural|GIA

0.40ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 6441376162

Certificate GIA 6441376162

Diamond specifications and retailer prices

From $601 AUD
$421 USD
As of October 31, 2026
Save $56 AUD (8%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,229 AUD at MOH London · As of October 4, 2026
View at MOH London

About this 0.4ct natural oval diamond

This 0.4ct natural oval sits in the sub-half-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6441376162. Listed at 6 retailers as of October 31, 2026, with a relatively tight 9% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6441376162
Dimensions5.43 × 4.14 × 2.71 mm
L/W Ratio1.31
Top View
5.43 mm4.14 mm0.40 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6441376162
Side View
Table 57.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 65.5%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: $1,229 AUD|Low: $601 AUD|High: $1,229 AUD|Avg: $777 AUD|+3.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 6, 2026
Retailer 8$601 AUD
Retailer 6$642 AUD
Retailer 7$642 AUD
Retailer 2$653 AUD
Retailer 5$656 AUD
Retailer 9$812 AUD
Retailer 3$842 AUD
Retailer 4$956 AUD
MOH London$1,229 AUD

18 data points across 9 retailers

6 retailers$601 AUD to $656 AUD

B+
Cheapest Retailer
-
$601 AUD
$421 USD
B+
Retailer 2
-
$642 AUD
$450 USD
View
B+
Retailer 3
-
$642 AUD
$450 USD
View
B+
Retailer 4
-
$656 AUD
$460 USD
View
Retailer 5
-
$842 AUD
View
Price last confirmed 28 days ago
Most Expensive
MOH London
5DBB86725 · Oct 4
$1,229 AUD
£678 GBP
View
Price last confirmed 29 days ago
5 more retailers have this diamond
Prices start from $601 AUDSave up to $56 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 Oval
$601 AUD