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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 $379 NZD
SGD 289 SGD
As of November 1, 2026
Save $358 NZD (49%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $738 NZD at Yorxs · As of November 2, 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 November 1, 2026, with prices from $379 to $738, a $358 spread on the same certified stone. Yorxs lists it at $738. 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: $598 NZD|Low: $379 NZD|High: $781 NZD|Avg: $551 NZD|+14.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Yorxs
November 2, 2026
Retailer 6$379 NZD
Retailer 3$492 NZD
Retailer 5$492 NZD
Retailer 4$504 NZD
Retailer 2$529 NZD
Retailer 7$576 NZD
Retailer 1$598 NZD
Yorxs$738 NZD

41 data points across 8 retailers

9 retailers$379 NZD to $738 NZD

A
Cheapest Retailer
-
$379 NZD
SGD 289 SGD
A
Retailer 2
-
$492 NZD
$277 USD
View
A
Retailer 3
-
$492 NZD
SGD 375 SGD
View
A
Retailer 4
-
$504 NZD
$284 USD
View
A
Retailer 5
-
$529 NZD
$298 USD
View
A
Retailer 6
-
$576 NZD
$325 USD
View
B+
Retailer 7
-
$593 NZD
$334 USD
View
B+
Retailer 8
-
$598 NZD
£265 GBP
View
Most Expensive
B+
Yorxs
590711895 · Nov 2
$738 NZD
€396 EUR
View
8 more retailers have this diamond
Prices start from $379 NZDSave up to $358 NZD

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
$379 NZD