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Marquise|Natural|GIA

1.20ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6565379734

Certificate GIA 6565379734

Diamond specifications and retailer prices

From $6,079 NZD
As of November 6, 2026
Save $6,288 NZD (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $12,368 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6565379734. Listed at 15 retailers as of November 5, 2026, with prices from $6,079 to $12,368, a $6,288 spread on the same certified stone. NZ Jewellers lists it at $12,368. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6565379734
Dimensions10.33 × 5.62 × 3.42 mm
L/W Ratio1.84
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cavity, Knot, Needle
Top View
10.33 mm5.62 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6565379734
Side View
Table 63.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 60.9%

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 6
Current: $12,368 NZD|Low: $6,079 NZD|High: $12,368 NZD|Avg: $7,747 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
Retailer 15
November 6, 2026
Retailer 7$6,079 NZD
Retailer 11$6,169 NZD
Retailer 12$6,357 NZD
Retailer 15$6,756 NZD
Retailer 4$6,941 NZD
Retailer 10$7,062 NZD
Retailer 13$7,062 NZD
Retailer 8$7,216 NZD
Retailer 3$7,342 NZD
Retailer 5$7,342 NZD
Retailer 6$7,594 NZD
Retailer 2$7,863 NZD
Retailer 14$10,358 NZD
Retailer 9$11,871 NZD
NZ Jewellers$12,368 NZD

35 data points across 15 retailers

15 retailers$6,079 NZD to $12,368 NZD

B+
Cheapest Retailer
-
$6,079 NZD
B+
Retailer 2
-
$6,169 NZD
View
B+
Retailer 3
-
$6,357 NZD
View
B
Retailer 4
-
$6,756 NZD
View
B
Retailer 5
-
$6,941 NZD
View
B
Retailer 6
-
$7,062 NZD
View
B
Retailer 7
-
$7,062 NZD
View
B
Retailer 8
-
$7,216 NZD
View
B
Retailer 9
-
$7,342 NZD
View
B
Retailer 10
-
$7,342 NZD
View
B
Retailer 11
-
$7,594 NZD
View
B
Retailer 12
-
$7,863 NZD
View
B
Retailer 13
-
$10,358 NZD
View
B
Retailer 14
-
$11,871 NZD
View
Most Expensive
B
NZ Jewellers
617fe7ef-dabd-4410-8bcc-3b14343cc3c6 · Nov 5
$12,368 NZD
$6,856 USD
View
14 more retailers have this diamond
Prices start from $6,079 NZDSave up to $6,288 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+
1.20ct Marquise
$6,079 NZD