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Marquise|Natural|GIA

0.40ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6552425978

Certificate GIA 6552425978

Diamond specifications and retailer prices

From $588 NZD
$331 USD
As of November 3, 2026
Save $773 NZD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,257 NZD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise 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 6552425978. Listed at 15 retailers as of November 2, 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
SymmetryGood
FluorescenceNone
Crown angle31.3°
Pavilion angle41.7°
OriginNatural
Grading LabGIA
CertificateGIA 6552425978
Dimensions7.56 × 3.86 × 2.39 mm
L/W Ratio1.96
Girdle conditionPolished
Top View
7.56 mm3.86 mm0.40 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 6552425978
Side View
Table 57.0%Crown 31.3°Girdle: VTK-XTKPavilion 41.7°Culet: NoneDepth 61.9%

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 3
Current: $2,257 NZD|Low: $588 NZD|High: $2,257 NZD|Avg: $1,005 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 3, 2026
Retailer 10$588 NZD
Retailer 7$658 NZD
Retailer 3$679 NZD
Retailer 5$691 NZD
Retailer 2$754 NZD
Retailer 6$793 NZD
Retailer 9$821 NZD
Retailer 13$885 NZD
Retailer 11$978 NZD
Retailer 4$997 NZD
Retailer 14$1,099 NZD
Retailer 8$1,192 NZD
Retailer 12$1,361 NZD
NZ Jewellers$2,257 NZD

31 data points across 14 retailers

15 retailers$588 NZD to $1,361 NZD

A
Cheapest Retailer
-
$588 NZD
$331 USD
B+
Retailer 2
-
$658 NZD
$370 USD
View
B+
Retailer 3
-
$679 NZD
$382 USD
View
B+
Retailer 4
-
$691 NZD
$389 USD
View
B+
Retailer 5
-
$754 NZD
£334 GBP
View
B+
Retailer 6
-
$793 NZD
$446 USD
View
B+
Retailer 7
-
$821 NZD
$462 USD
View
B
Retailer 8
-
$885 NZD
$498 USD
View
B
Retailer 9
-
$978 NZD
$550 USD
View
B
Retailer 10
-
$997 NZD
ZAR 9,059 ZAR
View
Retailer 11
-
$1,030 NZD
A$891 AUD
View
Price last confirmed 30 days ago
B
Retailer 12
-
$1,099 NZD
€589 EUR
View
B
Retailer 13
-
$1,192 NZD
£528 GBP
View
B
Retailer 14
-
$1,361 NZD
£603 GBP
View
Most Expensive
NZ Jewellers
982d8690-a459-4ed2-acf7-78356171462e · Nov 3
$2,257 NZD
$1,270 USD
View
Price under review
14 more retailers have this diamond
Prices start from $588 NZDSave up to $773 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 Marquise
$588 NZD