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Marquise|Natural|GIA

1.20ct J SI1 Marquise Natural Diamond

ID • J/SI1 • GIA 6552516815

Certificate GIA 6552516815

Diamond specifications and retailer prices

From $3,878 NZD
As of November 1, 2026
Save $6,245 NZD (62%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $10,123 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 6552516815. Listed at 23 retailers as of November 1, 2026, with prices from $3,878 to $10,123, a $6,245 spread on the same certified stone. NZ Jewellers lists it at $10,123. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6552516815
Dimensions10.47 × 5.51 × 3.50 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Indented Natural, Needle, Extra Facet
Top View
10.47 mm5.51 mm1.20 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6552516815
Side View
Table 61.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 63.6%

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 1
Current: $10,123 NZD|Low: $3,848 NZD|High: $10,322 NZD|Avg: $5,104 NZD|-1.9%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 6, 2026
Retailer 14$3,848 NZD
Retailer 5$3,878 NZD
Retailer 11$4,050 NZD
Retailer 8$4,075 NZD
Retailer 7$4,367 NZD
Retailer 4$4,374 NZD
Retailer 10$4,387 NZD
Retailer 20$4,387 NZD
Retailer 12$4,463 NZD
Retailer 9$4,468 NZD
Retailer 3$4,589 NZD
Retailer 15$4,697 NZD
Retailer 2$4,773 NZD
Retailer 21$4,903 NZD
Retailer 18$5,062 NZD
Retailer 17$5,094 NZD
Retailer 16$5,634 NZD
Retailer 19$5,910 NZD
Retailer 13$7,432 NZD
Retailer 6$8,482 NZD
NZ Jewellers$10,123 NZD

20 data points across 21 retailers

23 retailers$3,878 NZD to $10,123 NZD

Retailer 1
-
$3,848 NZD
Price last confirmed 17 days ago
A
Retailer 2
-
$3,878 NZD
View
B+
Retailer 3
-
$4,050 NZD
View
Final sale: no returns
A
Retailer 4
-
$4,075 NZD
View
A
Retailer 5
-
$4,367 NZD
View
A
Retailer 6
-
$4,374 NZD
View
A
Retailer 7
-
$4,387 NZD
View
Retailer 8
-
$4,387 NZD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$4,463 NZD
View
B+
Retailer 10
-
$4,468 NZD
View
B+
Retailer 11
-
$4,589 NZD
View
B+
Retailer 12
-
$4,697 NZD
View
B+
Retailer 13
-
$4,773 NZD
View
B+
Retailer 14
-
$4,903 NZD
View
B+
Retailer 15
-
$5,062 NZD
View
B+
Retailer 16
-
$5,094 NZD
View
B+
Retailer 17
-
$5,156 NZD
View
Retailer 18
-
$5,531 NZD
View
Price last confirmed 31 days ago
B+
Retailer 19
-
$5,634 NZD
View
B
Retailer 20
-
$5,910 NZD
View
B
Retailer 21
-
$7,432 NZD
View
B
Retailer 22
-
$8,482 NZD
View
Most Expensive
B
NZ Jewellers
7263c95b-dd3a-487d-a178-0f0d2679b9a8 · Nov 5
$10,123 NZD
$5,612 USD
View
22 more retailers have this diamond
Prices start from $3,878 NZDSave up to $6,245 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
$3,878 NZD