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Oval|Natural|GIA

0.40ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 6551642485

Certificate GIA 6551642485

Diamond specifications and retailer prices

From $304 AUD
SGD 289 SGD
As of November 1, 2026
Save $286 AUD (48%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $590 AUD at Yorxs · As of October 31, 2026
View at Yorxs

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 6551642485. Listed at 9 retailers as of October 31, 2026, with prices from $304 to $590, a $286 spread on the same certified stone. Yorxs lists it at $590. 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
PolishGood
SymmetryGood
FluorescenceNone
Crown angle37.82°
Pavilion angle41.22°
OriginNatural
Grading LabGIA
CertificateGIA 6551642485
Dimensions5.87 × 4.13 × 2.59 mm
L/W Ratio1.42
Culet sizeNone
Top View
5.87 mm4.13 mm0.40 ctJ / SI1
OriginNatural
CutExcellent
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 6551642485
Side View
Table 58.0%Crown 37.82°Girdle: MED-VTKPavilion 41.22°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $480 AUD|Low: $304 AUD|High: $626 AUD|Avg: $442 AUD|+14.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Yorxs
November 2, 2026
Retailer 6$304 AUD
Retailer 3$395 AUD
Retailer 5$395 AUD
Retailer 4$404 AUD
Retailer 2$424 AUD
Retailer 7$462 AUD
Retailer 1$480 AUD
Yorxs$590 AUD

41 data points across 8 retailers

9 retailers$304 AUD to $590 AUD

A
Cheapest Retailer
-
$304 AUD
SGD 289 SGD
A
Retailer 2
-
$395 AUD
$277 USD
View
A
Retailer 3
-
$395 AUD
SGD 375 SGD
View
A
Retailer 4
-
$404 AUD
$284 USD
View
A
Retailer 5
-
$424 AUD
$298 USD
View
A
Retailer 6
-
$462 AUD
$325 USD
View
B+
Retailer 7
-
$475 AUD
$334 USD
View
B+
Retailer 8
-
$480 AUD
£265 GBP
View
Most Expensive
B+
Yorxs
590711895 · Oct 31
$590 AUD
€395 EUR
View
8 more retailers have this diamond
Prices start from $304 AUDSave up to $286 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 Oval
$304 AUD