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Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 5553457339

Certificate GIA 5553457339

Diamond specifications and retailer prices

From $3,390 NZD
As of November 6, 2026
Save $4,181 NZD (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $8,294 NZD at NZ Jewellers · As of September 29, 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 5553457339. Listed at 22 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553457339
Dimensions10.58 × 5.04 × 3.13 mm
L/W Ratio2.10
Girdle conditionThick to Very Thick
Key to symbols
Feather, Pinpoint, Needle, Indented Natural
Top View
10.58 mm5.04 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553457339
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.0%

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: $5,563 NZD|Low: $2,955 NZD|High: $7,571 NZD|Avg: $4,331 NZD
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 6, 2026
Retailer 16$2,955 NZD
Retailer 13$3,067 NZD
Retailer 12$3,390 NZD
Retailer 8$3,536 NZD
Retailer 5$3,613 NZD
Retailer 22$3,678 NZD
Retailer 15$3,682 NZD
Retailer 3$3,685 NZD
Retailer 18$3,817 NZD
Retailer 4$3,951 NZD
Retailer 9$4,014 NZD
Retailer 17$4,138 NZD
Retailer 14$4,151 NZD
Retailer 24$4,237 NZD
Retailer 10$4,412 NZD
Retailer 6$4,528 NZD
Retailer 7$4,528 NZD
Retailer 21$4,571 NZD
Retailer 11$4,672 NZD
Retailer 19$5,031 NZD
Retailer 20$5,275 NZD
Retailer 1$5,563 NZD
Retailer 23$6,214 NZD
Retailer 2$7,571 NZD

32 data points across 24 retailers

22 retailers$3,390 NZD to $7,571 NZD

Retailer 1
-
$2,955 NZD
Price last confirmed 21 days ago
A
Retailer 2
-
$3,390 NZD
View
B+
Retailer 3
-
$3,536 NZD
View
B+
Retailer 4
-
$3,613 NZD
View
Final sale: no returns
B+
Retailer 5
-
$3,678 NZD
View
B+
Retailer 6
-
$3,685 NZD
View
B+
Retailer 7
-
$3,817 NZD
View
B+
Retailer 8
-
$3,951 NZD
View
Retailer 9
-
$3,967 NZD
View
Price last confirmed 30 days ago
B+
Retailer 10
-
$4,014 NZD
View
B+
Retailer 11
-
$4,237 NZD
View
B+
Retailer 12
-
$4,412 NZD
View
B+
Retailer 13
-
$4,528 NZD
View
B+
Retailer 14
-
$4,528 NZD
View
B+
Retailer 15
-
$4,571 NZD
View
B
Retailer 16
-
$4,672 NZD
View
B
Retailer 17
-
$5,031 NZD
View
B
Retailer 18
-
$5,275 NZD
View
B
Retailer 19
-
$5,563 NZD
View
B
Retailer 20
-
$6,214 NZD
View
B
Retailer 21
-
$7,571 NZD
View
Most Expensive
NZ Jewellers
d5056980-58bb-42a3-a1f3-9b25bfcf425e · Sep 29
$8,294 NZD
$4,598 USD
View
Price last confirmed 38 days ago
21 more retailers have this diamond
Prices start from $3,390 NZDSave up to $4,181 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
$3,390 NZD