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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 $358 SGD
$280 USD
As of October 28, 2026
Save $81 SGD (18%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $439 SGD 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 October 28, 2026, with prices from $358 to $439, a $81 spread on the same certified stone. 77 Diamonds lists it at $439. 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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $439 SGD|Low: $358 SGD|High: $443 SGD|Avg: $385 SGD|+18.9%
77 Diamonds
Retailer 2
November 1, 2026
Retailer 2$358 SGD
77 Diamonds$439 SGD

39 data points across 2 retailers

2 retailers$358 SGD to $439 SGD

B+
Cheapest Retailer
-
$358 SGD
$280 USD
Most Expensive
B
77 Diamonds
OVCPYX7RBSSK · Nov 1
$439 SGD
£270 GBP
View
1 more retailer has this diamond
Prices start from $358 SGDSave up to $81 SGD

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
$358 SGD