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Marquise|Natural|GIA

1.20ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 5553986283

Certificate GIA 5553986283

Diamond specifications and retailer prices

From $4,317 NZD
As of November 6, 2026
Save $5,280 NZD (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $10,307 NZD at NZ Jewellers · As of September 27, 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 5553986283. Listed at 18 retailers as of November 1, 2026, with a 122% 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553986283
Dimensions10.69 × 5.62 × 3.41 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cavity, Indented Natural, Natural
Top View
10.69 mm5.62 mm1.20 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5553986283
Side View
Table 57.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 60.7%

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: $5,937 NZD|Low: $4,293 NZD|High: $9,700 NZD|Avg: $5,840 NZD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 12$4,317 NZD
Retailer 5$4,475 NZD
Retailer 9$5,199 NZD
Retailer 4$5,296 NZD
Retailer 6$5,643 NZD
Retailer 2$5,738 NZD
Retailer 1$5,937 NZD
Retailer 10$5,960 NZD
Retailer 3$5,996 NZD
Retailer 7$6,014 NZD
Retailer 8$6,680 NZD
Retailer 11$9,597 NZD

28 data points across 12 retailers

18 retailers$4,317 NZD to $9,597 NZD

A
Cheapest Retailer
-
$4,317 NZD
A
Retailer 2
-
$4,475 NZD
View
A
Retailer 3
-
$5,199 NZD
View
B+
Retailer 4
-
$5,296 NZD
View
Final sale: no returns
B+
Retailer 5
-
$5,473 NZD
View
B+
Retailer 6
-
$5,643 NZD
View
Retailer 7
-
$5,738 NZD
View
Price last confirmed 22 days ago
B+
Retailer 8
-
$5,812 NZD
View
Retailer 9
-
$5,917 NZD
View
Price last confirmed 42 days ago
Retailer 10
-
$5,917 NZD
View
Price last confirmed 34 days ago
B+
Retailer 11
-
$5,937 NZD
View
B+
Retailer 12
-
$5,960 NZD
View
B+
Retailer 13
-
$5,996 NZD
View
B+
Retailer 14
-
$6,014 NZD
View
B+
Retailer 15
-
$6,680 NZD
View
Retailer 16
-
$6,826 NZD
View
Price last confirmed 40 days ago
B
Retailer 17
-
$9,597 NZD
View
Most Expensive
NZ Jewellers
53aac2cf-aa17-4cbf-abb5-3d74a658046a · Sep 27
$10,307 NZD
$5,714 USD
View
Price last confirmed 40 days ago
17 more retailers have this diamond
Prices start from $4,317 NZDSave up to $5,280 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
$4,317 NZD