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Marquise|Natural|GIA

1.20ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 2557877511

Certificate GIA 2557877511

Diamond specifications and retailer prices

From $5,363 NZD
As of November 6, 2026
Save $7,180 NZD (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,543 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557877511. Listed at 19 retailers as of November 5, 2026, with prices from $5,363 to $12,543, a $7,180 spread on the same certified stone. NZ Jewellers lists it at $12,543. 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

1.20
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557877511
Dimensions10.35 × 5.44 × 3.47 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Twinning Wisp, Cavity, Needle
Top View
10.35 mm5.44 mm1.20 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557877511
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NDepth 63.9%

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: $12,543 NZD|Low: $5,363 NZD|High: $12,543 NZD|Avg: $7,805 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
Retailer 14
November 7, 2026
Retailer 7$5,363 NZD
Retailer 13$6,703 NZD
Retailer 4$6,837 NZD
Retailer 8$7,079 NZD
Retailer 3$7,199 NZD
Retailer 11$7,199 NZD
Retailer 12$7,199 NZD
Retailer 2$7,291 NZD
Retailer 5$7,342 NZD
Retailer 6$7,640 NZD
Retailer 9$7,897 NZD
Retailer 14$8,307 NZD
Retailer 10$12,037 NZD
NZ Jewellers$12,543 NZD

30 data points across 14 retailers

19 retailers$5,363 NZD to $12,543 NZD

A
Cheapest Retailer
-
$5,363 NZD
B+
Retailer 2
-
$5,722 NZD
View
Final sale: no returns
B+
Retailer 3
-
$5,984 NZD
View
B+
Retailer 4
-
$6,335 NZD
View
B+
Retailer 5
-
$6,703 NZD
View
B+
Retailer 6
-
$6,837 NZD
View
B+
Retailer 7
-
$7,079 NZD
View
B
Retailer 8
-
$7,199 NZD
View
B
Retailer 9
-
$7,199 NZD
View
Retailer 10
-
$7,199 NZD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$7,291 NZD
View
B
Retailer 12
-
$7,342 NZD
View
B
Retailer 13
-
$7,463 NZD
View
B
Retailer 14
-
$7,640 NZD
View
B
Retailer 15
-
$7,667 NZD
View
B+
Retailer 16
-
$7,897 NZD
View
B
Retailer 17
-
$8,307 NZD
View
B
Retailer 18
-
$12,037 NZD
View
Most Expensive
C
NZ Jewellers
c2a31624-9175-4791-8f74-0e7976ecf87d · Nov 5
$12,543 NZD
$6,953 USD
View
18 more retailers have this diamond
Prices start from $5,363 NZDSave up to $7,180 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
1.20ct Marquise
$5,363 NZD