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Marquise|Natural|GIA

1.20ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 2557721221

Certificate GIA 2557721221

Diamond specifications and retailer prices

From $3,925 NZD
As of November 6, 2026
Save $4,760 NZD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,766 NZD at NZ Jewellers · As of September 28, 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 J 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 2557721221. Listed at 15 retailers as of November 4, 2026, with a 121% 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557721221
Dimensions10.19 × 5.54 × 3.46 mm
L/W Ratio1.84
Girdle conditionFaceted
Key to symbols
Twinning Wisp, Feather, Crystal, Indented Natural, Needle, Knot, Natural, Extra Facet
Top View
10.19 mm5.54 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557721221
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: Very SmallDepth 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: $4,061 NZD|Low: $3,878 NZD|High: $9,285 NZD|Avg: $5,494 NZD|-7.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8$3,925 NZD
Retailer 1$4,061 NZD
Retailer 2$4,807 NZD
Retailer 6$4,818 NZD
Retailer 3$5,116 NZD
Retailer 11$5,451 NZD
Retailer 9$5,464 NZD
Retailer 5$5,513 NZD
Retailer 10$5,664 NZD
Retailer 4$6,063 NZD
Retailer 7$8,686 NZD

34 data points across 11 retailers

15 retailers$3,925 NZD to $8,686 NZD

A
Cheapest Retailer
-
$3,925 NZD
A
Retailer 2
-
$4,061 NZD
View
B+
Retailer 3
-
$4,807 NZD
View
Final sale: no returns
B+
Retailer 4
-
$4,818 NZD
View
B+
Retailer 5
-
$5,116 NZD
View
B+
Retailer 6
-
$5,451 NZD
View
B+
Retailer 7
-
$5,464 NZD
View
Retailer 8
-
$5,486 NZD
View
Price last confirmed 25 days ago
B+
Retailer 9
-
$5,513 NZD
View
Retailer 10
-
$5,605 NZD
View
Price last confirmed 41 days ago
B
Retailer 11
-
$5,664 NZD
View
B+
Retailer 12
-
$6,063 NZD
View
Retailer 13
-
$6,469 NZD
View
Price last confirmed 38 days ago
B
Retailer 14
-
$8,686 NZD
View
Most Expensive
NZ Jewellers
b32b4b42-4344-4635-bb13-caf0ed669bc1 · Sep 28
$9,766 NZD
$5,414 USD
View
Price last confirmed 39 days ago
14 more retailers have this diamond
Prices start from $3,925 NZDSave up to $4,760 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
$3,925 NZD