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Marquise|Natural|GIA

1.00ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 1555023523

Certificate GIA 1555023523

Diamond specifications and retailer prices

From $5,009 NZD
As of November 6, 2026
Save $5,949 NZD (54%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $12,250 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555023523. Listed at 25 retailers as of November 4, 2026, with a 119% 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555023523
Dimensions9.87 × 5.19 × 3.24 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Cavity, Needle, Indented Natural, Natural
Top View
9.87 mm5.19 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1555023523
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.4%

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: $5,187 NZD|Low: $5,009 NZD|High: $11,107 NZD|Avg: $7,341 NZD|-1.1%
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
November 6, 2026
Retailer 13$5,009 NZD
Retailer 1$5,187 NZD
Retailer 9$5,865 NZD
Retailer 5$5,943 NZD
Retailer 2$6,119 NZD
Retailer 6$6,374 NZD
Retailer 4$6,571 NZD
Retailer 7$6,760 NZD
Retailer 12$6,824 NZD
Retailer 11$7,662 NZD
Retailer 8$8,021 NZD
Retailer 3$10,177 NZD
Retailer 10$10,958 NZD

24 data points across 13 retailers

25 retailers$5,009 NZD to $10,958 NZD

A
Cheapest Retailer
-
$5,009 NZD
A
Retailer 2
-
$5,187 NZD
View
A
Retailer 3
-
$5,865 NZD
View
A
Retailer 4
-
$5,927 NZD
View
A
Retailer 5
-
$5,943 NZD
View
A
Retailer 6
-
$6,064 NZD
View
Final sale: no returns
A
Retailer 7
-
$6,119 NZD
View
B+
Retailer 8
-
$6,119 NZD
View
B+
Retailer 9
-
$6,313 NZD
View
A
Retailer 10
-
$6,374 NZD
View
Retailer 11
-
$6,571 NZD
View
Price last confirmed 8 days ago
Retailer 12
-
$6,571 NZD
View
Price last confirmed 21 days ago
B+
Retailer 13
-
$6,760 NZD
View
B+
Retailer 14
-
$6,824 NZD
View
B+
Retailer 15
-
$6,829 NZD
View
B+
Retailer 16
-
$6,831 NZD
View
B+
Retailer 17
-
$6,920 NZD
View
Retailer 18
-
$7,032 NZD
View
Price last confirmed 38 days ago
Retailer 19
-
$7,141 NZD
View
Price last confirmed 29 days ago
B+
Retailer 20
-
$7,662 NZD
View
B+
Retailer 21
-
$8,021 NZD
View
Retailer 22
-
$8,114 NZD
View
Price last confirmed 38 days ago
Retailer 23
-
$10,177 NZD
View
Price last confirmed 9 days ago
B
Retailer 24
-
$10,958 NZD
View
Most Expensive
NZ Jewellers
59feb36f-121a-4f76-9f73-37702296f960 · Sep 29
$12,250 NZD
$6,886 USD
View
Price last confirmed 37 days ago
24 more retailers have this diamond
Prices start from $5,009 NZDSave up to $5,949 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
$5,009 NZD