Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 2556243794

Certificate GIA 2556243794

Diamond specifications and retailer prices

From $3,454 NZD
As of November 6, 2026
Save $4,647 NZD (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,696 NZD at NZ Jewellers · As of September 30, 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 2556243794. Listed at 19 retailers as of November 4, 2026, with a 135% 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2556243794
Dimensions9.61 × 5.14 × 3.30 mm
L/W Ratio1.87
Top View
9.61 mm5.14 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2556243794
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.3%

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: $9,696 NZD|Low: $3,454 NZD|High: $9,696 NZD|Avg: $5,718 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
November 6, 2026
Retailer 2$3,454 NZD
Retailer 9$4,068 NZD
Retailer 11$4,279 NZD
Retailer 4$4,591 NZD
Retailer 3$4,852 NZD
Retailer 5$4,878 NZD
Retailer 12$5,195 NZD
Retailer 6$5,661 NZD
Retailer 8$5,789 NZD
Retailer 10$6,674 NZD
Retailer 7$8,101 NZD
NZ Jewellers$9,696 NZD

34 data points across 12 retailers

19 retailers$3,454 NZD to $8,101 NZD

A
Cheapest Retailer
-
$3,454 NZD
B+
Retailer 2
-
$4,068 NZD
View
B+
Retailer 3
-
$4,153 NZD
View
B+
Retailer 4
-
$4,234 NZD
View
B+
Retailer 5
-
$4,279 NZD
View
Final sale: no returns
B
Retailer 6
-
$4,591 NZD
View
Retailer 7
-
$4,638 NZD
View
Price last confirmed 46 days ago
Retailer 8
-
$4,638 NZD
View
Price last confirmed 26 days ago
Retailer 9
-
$4,638 NZD
View
Price last confirmed 30 days ago
B
Retailer 10
-
$4,878 NZD
View
Retailer 11
-
$5,195 NZD
View
Price last confirmed 31 days ago
B
Retailer 12
-
$5,332 NZD
View
Retailer 13
-
$5,352 NZD
View
Price last confirmed 46 days ago
Retailer 14
-
$5,352 NZD
View
Price last confirmed 29 days ago
B
Retailer 15
-
$5,661 NZD
View
B
Retailer 16
-
$5,789 NZD
View
Retailer 17
-
$6,674 NZD
View
Price last confirmed 11 days ago
B
Retailer 18
-
$8,101 NZD
View
Most Expensive
NZ Jewellers
24ef520f-79b3-42a4-b61e-99c23dea28c3 · Sep 30
$9,696 NZD
$5,375 USD
View
Price last confirmed 37 days ago
18 more retailers have this diamond
Prices start from $3,454 NZDSave up to $4,647 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
$3,454 NZD