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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 $747 NZD
$421 USD
As of October 31, 2026
Save $69 NZD (8%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,528 NZD 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 30, 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: $1,528 NZD|Low: $747 NZD|High: $1,528 NZD|Avg: $967 NZD|+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$747 NZD
Retailer 6$798 NZD
Retailer 7$798 NZD
Retailer 2$813 NZD
Retailer 5$816 NZD
Retailer 9$1,010 NZD
Retailer 3$1,047 NZD
Retailer 4$1,189 NZD
MOH London$1,528 NZD

18 data points across 9 retailers

6 retailers$747 NZD to $816 NZD

B+
Cheapest Retailer
-
$747 NZD
$421 USD
B+
Retailer 2
-
$798 NZD
$450 USD
View
B+
Retailer 3
-
$798 NZD
$450 USD
View
B+
Retailer 4
-
$816 NZD
$460 USD
View
Retailer 5
-
$1,047 NZD
A$908 AUD
View
Price last confirmed 28 days ago
Most Expensive
MOH London
5DBB86725 · Oct 4
$1,528 NZD
£678 GBP
View
Price last confirmed 29 days ago
5 more retailers have this diamond
Prices start from $747 NZDSave up to $69 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.

B+
0.40ct Oval
$747 NZD