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Marquise|Natural|GIA

1.00ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6552654453

Certificate GIA 6552654453

Diamond specifications and retailer prices

From $5,616 NZD
As of November 4, 2026
Save $5,065 NZD (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $10,681 NZD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

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 6552654453. Listed at 15 retailers as of November 4, 2026, with prices from $5,616 to $10,681, a $5,065 spread on the same certified stone. Helzberg Diamonds lists it at $10,681. 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
FluorescenceNone
Crown angle35.79°
Pavilion angle41.05°
OriginNatural
Grading LabGIA
CertificateGIA 6552654453
Dimensions10.44 × 5.06 × 3.18 mm
L/W Ratio2.06
Culet sizeNone
Top View
10.44 mm5.06 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552654453
Side View
Table 58.0%Crown 35.79°Girdle: MED-VTKPavilion 41.05°Culet: NoneDepth 62.8%

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 4
Current: $10,681 NZD|Low: $5,616 NZD|High: $10,681 NZD|Avg: $7,357 NZD|+4.0%
Helzberg Diamonds
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 11$5,616 NZD
Retailer 9$5,753 NZD
Retailer 6$5,769 NZD
Retailer 12$6,055 NZD
Retailer 13$6,066 NZD
Retailer 8$6,513 NZD
Retailer 5$6,763 NZD
Retailer 3$7,171 NZD
Retailer 4$7,281 NZD
Retailer 7$7,466 NZD
Retailer 2$7,793 NZD
Retailer 14$9,473 NZD
Retailer 10$10,077 NZD
Helzberg Diamonds$10,681 NZD

34 data points across 14 retailers

15 retailers$5,616 NZD to $10,681 NZD

A
Cheapest Retailer
-
$5,616 NZD
A
Retailer 2
-
$5,753 NZD
View
A
Retailer 3
-
$5,769 NZD
View
A
Retailer 4
-
$6,055 NZD
View
B+
Retailer 5
-
$6,066 NZD
View
B+
Retailer 6
-
$6,513 NZD
View
B+
Retailer 7
-
$6,763 NZD
View
B+
Retailer 8
-
$7,171 NZD
View
B+
Retailer 9
-
$7,281 NZD
View
B+
Retailer 10
-
$7,466 NZD
View
B
Retailer 11
-
$7,724 NZD
View
B+
Retailer 12
-
$7,793 NZD
View
B
Retailer 13
-
$9,473 NZD
View
B
Retailer 14
-
$10,077 NZD
View
Most Expensive
B
Helzberg Diamonds
XZRMLLIMLKKLJ · Nov 6
$10,681 NZD
$6,004 USD
View
14 more retailers have this diamond
Prices start from $5,616 NZDSave up to $5,065 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
$5,616 NZD