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Oval|Natural|GIA

0.40ct J SI2 Oval Natural Diamond

GD • J/SI2 • GIA 2566233715

Certificate GIA 2566233715

Diamond specifications and retailer prices

From $399 AUD
$280 USD
As of November 1, 2026
Save $90 AUD (18%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $489 AUD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2566233715. Listed at 2 retailers as of November 1, 2026, with prices from $399 to $489, a $90 spread on the same certified stone. 77 Diamonds lists it at $489. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.40
Carat
J
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2566233715
Dimensions5.56 × 4.08 × 2.71 mm
L/W Ratio1.36
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Knot
Top View
5.56 mm4.08 mm0.40 ctJ / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceMedium
CertificateGIA 2566233715
Side View
Table 58.0%CrownGirdle: STK-ETKPavilionCuletDepth 66.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: $489 AUD|Low: $399 AUD|High: $493 AUD|Avg: $429 AUD|+18.9%
77 Diamonds
Retailer 2
November 1, 2026
Retailer 2$399 AUD
77 Diamonds$489 AUD

39 data points across 2 retailers

2 retailers$399 AUD to $489 AUD

B+
Cheapest Retailer
-
$399 AUD
$280 USD
Most Expensive
B
77 Diamonds
OVCPYX7RBSSK · Nov 1
$489 AUD
£270 GBP
View
1 more retailer has this diamond
Prices start from $399 AUDSave up to $90 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
$399 AUD