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Marquise|Natural|GIA

1.00ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6551185021

Certificate GIA 6551185021

Diamond specifications and retailer prices

From $6,815 NZD
As of November 5, 2026
Save $8,380 NZD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $15,195 NZD at NZ Jewellers · As of November 5, 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 6551185021. Listed at 21 retailers as of November 5, 2026, with prices from $6,815 to $15,195, a $8,380 spread on the same certified stone. NZ Jewellers lists it at $15,195. 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
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551185021
Dimensions10.31 × 5.06 × 3.18 mm
L/W Ratio2.04
Girdle conditionFaceted
Culet sizeNone
Top View
10.31 mm5.06 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551185021
Side View
Table 56.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 62.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $15,195 NZD|Low: $6,954 NZD|High: $15,195 NZD|Avg: $9,488 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
Retailer 13
November 6, 2026
Retailer 9$6,954 NZD
Retailer 12$7,422 NZD
Retailer 4$7,459 NZD
Retailer 11$7,489 NZD
Retailer 3$7,902 NZD
Retailer 13$7,902 NZD
Retailer 2$8,535 NZD
Retailer 5$8,606 NZD
Retailer 10$8,791 NZD
Retailer 8$9,828 NZD
Retailer 6$10,641 NZD
Retailer 7$13,852 NZD
NZ Jewellers$15,195 NZD

46 data points across 13 retailers

21 retailers$6,815 NZD to $15,195 NZD

B+
Cheapest Retailer
-
$6,815 NZD
B+
Retailer 2
-
$6,954 NZD
View
B+
Retailer 3
-
$7,212 NZD
View
B+
Retailer 4
-
$7,422 NZD
View
B+
Retailer 5
-
$7,459 NZD
View
B+
Retailer 6
-
$7,489 NZD
View
Retailer 7
-
$7,902 NZD
View
Price last confirmed 8 days ago
B
Retailer 8
-
$7,902 NZD
View
B
Retailer 9
-
$7,902 NZD
View
B+
Retailer 10
-
$8,535 NZD
View
B
Retailer 11
-
$8,606 NZD
View
Retailer 12
-
$8,791 NZD
View
Price last confirmed 28 days ago
B
Retailer 13
-
$8,877 NZD
View
B
Retailer 14
-
$8,877 NZD
View
B
Retailer 15
-
$9,117 NZD
View
B
Retailer 16
-
$9,179 NZD
View
Retailer 17
-
$9,631 NZD
View
Price last confirmed 14 days ago
B
Retailer 18
-
$9,828 NZD
View
B
Retailer 19
-
$10,641 NZD
View
B
Retailer 20
-
$13,852 NZD
View
Most Expensive
B
NZ Jewellers
f3e8fe6d-4665-4962-b68a-9e5acc960959 · Nov 5
$15,195 NZD
$8,542 USD
View
20 more retailers have this diamond
Prices start from $6,815 NZDSave up to $8,380 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.

B+
1.00ct Marquise
$6,815 NZD