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Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

ID • J/SI1 • GIA 2556947990

Certificate GIA 2556947990

Diamond specifications and retailer prices

From $3,676 NZD
As of November 6, 2026
Save $4,515 NZD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $10,107 NZD at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-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 2556947990. Listed at 21 retailers as of November 2, 2026, with a 123% 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

1.00
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556947990
Dimensions9.73 × 5.17 × 3.30 mm
L/W Ratio1.88
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Cloud, Twinning Wisp, Crystal, Needle
Top View
9.73 mm5.17 mm1.00 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556947990
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.9%

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 6
Current: $7,270 NZD|Low: $3,676 NZD|High: $8,560 NZD|Avg: $5,096 NZD|-2.2%
Retailer 1
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 6, 2026
Retailer 4$3,676 NZD
Retailer 5$3,765 NZD
Retailer 14$3,909 NZD
Retailer 3$4,230 NZD
Retailer 12$4,306 NZD
Retailer 6$4,320 NZD
Retailer 13$4,324 NZD
Retailer 7$4,537 NZD
Retailer 9$4,919 NZD
Retailer 2$5,372 NZD
Retailer 8$5,515 NZD
Retailer 10$5,708 NZD
Retailer 1$7,270 NZD
Retailer 11$8,192 NZD

27 data points across 14 retailers

21 retailers$3,676 NZD to $8,192 NZD

A
Cheapest Retailer
-
$3,676 NZD
Retailer 2
-
$3,765 NZD
View
Price last confirmed 17 days ago
B+
Retailer 3
-
$3,909 NZD
View
Final sale: no returns
B+
Retailer 4
-
$4,230 NZD
View
B+
Retailer 5
-
$4,306 NZD
View
B+
Retailer 6
-
$4,320 NZD
View
B+
Retailer 7
-
$4,324 NZD
View
B+
Retailer 8
-
$4,537 NZD
View
Retailer 9
-
$4,834 NZD
View
Price last confirmed 31 days ago
Retailer 10
-
$4,834 NZD
View
Price last confirmed 30 days ago
B+
Retailer 11
-
$4,919 NZD
View
Retailer 12
-
$5,103 NZD
View
Price last confirmed 37 days ago
B
Retailer 13
-
$5,372 NZD
View
Retailer 14
-
$5,415 NZD
View
Price last confirmed 31 days ago
B+
Retailer 15
-
$5,515 NZD
View
Retailer 16
-
$5,578 NZD
View
Price last confirmed 29 days ago
Retailer 17
-
$5,670 NZD
View
Price last confirmed 62 days ago
B
Retailer 18
-
$5,708 NZD
View
B
Retailer 19
-
$7,270 NZD
View
B
Retailer 20
-
$8,192 NZD
View
Most Expensive
NZ Jewellers
d63d4123-be0c-4f0a-ac4c-091201eb873a · Oct 6
$10,107 NZD
$5,603 USD
View
Price last confirmed 31 days ago
20 more retailers have this diamond
Prices start from $3,676 NZDSave up to $4,515 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
1.00ct Marquise
$3,676 NZD