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Oval|Natural|GIA

0.40ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 7488072215

Certificate GIA 7488072215

Diamond specifications and retailer prices

From $628 NZD
$354 USD
As of October 31, 2026
Save $823 NZD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,406 NZD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 7488072215. Listed at 18 retailers as of October 26, 2026, with a 131% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 7488072215
Dimensions5.89 × 4.01 × 2.58 mm
L/W Ratio1.47
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal
Top View
5.89 mm4.01 mm0.40 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7488072215
Side View
Table 56.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 64.5%

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: Oct 31
Current: $1,271 NZD|Low: $701 NZD|High: $1,467 NZD|Avg: $991 NZD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 9$701 NZD
Retailer 7$765 NZD
Retailer 2$807 NZD
Retailer 4$973 NZD
Retailer 8$1,006 NZD
Retailer 5$1,011 NZD
Retailer 3$1,159 NZD
Retailer 1$1,271 NZD
Retailer 6$1,451 NZD

37 data points across 9 retailers

18 retailers$628 NZD to $1,451 NZD

A
Cheapest Retailer
-
$628 NZD
$354 USD
B+
Retailer 2
-
$660 NZD
SGD 503 SGD
View
B+
Retailer 3
-
$676 NZD
$381 USD
View
B+
Retailer 4
-
$701 NZD
$395 USD
View
B+
Retailer 5
-
$742 NZD
$418 USD
View
B+
Retailer 6
-
$765 NZD
$431 USD
View
B+
Retailer 7
-
$807 NZD
£358 GBP
View
B
Retailer 8
-
$845 NZD
$476 USD
View
B
Retailer 9
-
$860 NZD
$484 USD
View
B+
Retailer 10
-
$894 NZD
$504 USD
View
B
Retailer 11
-
$909 NZD
$512 USD
View
B
Retailer 12
-
$973 NZD
ZAR 8,862 ZAR
View
Retailer 13
-
$1,006 NZD
A$872 AUD
View
Price last confirmed 29 days ago
B
Retailer 14
-
$1,011 NZD
$570 USD
View
B
Retailer 15
-
$1,159 NZD
€622 EUR
View
B
Retailer 16
-
$1,271 NZD
£564 GBP
View
B
Retailer 17
-
$1,451 NZD
£644 GBP
View
Most Expensive
NZ Jewellers
31b79f22-11ce-47dc-b61d-e0e62e2e7811 · Oct 30
$2,406 NZD
$1,356 USD
View
Price under review
17 more retailers have this diamond
Prices start from $628 NZDSave up to $823 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
$628 NZD