CaratHunter
Plans
Marquise|Natural|GIA

1.20ct J SI1 Marquise Natural Diamond

ID • J/SI1 • GIA 7551009950

Certificate GIA 7551009950

Diamond specifications and retailer prices

From $6,341 NZD
As of November 6, 2026
Save $7,304 NZD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $13,645 NZD at MOH London · As of November 4, 2026
View at MOH London

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 7551009950. Listed at 20 retailers as of November 4, 2026, with prices from $6,341 to $13,645, a $7,304 spread on the same certified stone. MOH London lists it at $13,645. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551009950
Dimensions10.45 × 5.51 × 3.48 mm
L/W Ratio1.90
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
10.45 mm5.51 mm1.20 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7551009950
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.1%

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: $13,645 NZD|Low: $6,341 NZD|High: $13,847 NZD|Avg: $9,013 NZD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9$6,341 NZD
Retailer 5$6,779 NZD
Retailer 12$6,988 NZD
Retailer 3$7,782 NZD
Retailer 10$7,910 NZD
Retailer 4$8,148 NZD
Retailer 7$8,408 NZD
Retailer 11$8,659 NZD
Retailer 6$9,121 NZD
Retailer 2$9,238 NZD
Retailer 8$10,481 NZD
MOH London$13,645 NZD

44 data points across 12 retailers

20 retailers$6,341 NZD to $13,645 NZD

B+
Cheapest Retailer
-
$6,341 NZD
B+
Retailer 2
-
$6,521 NZD
View
B
Retailer 3
-
$6,712 NZD
View
B+
Retailer 4
-
$6,779 NZD
View
B
Retailer 5
-
$6,849 NZD
View
B
Retailer 6
-
$6,864 NZD
View
B
Retailer 7
-
$7,742 NZD
View
Retailer 8
-
$7,782 NZD
View
Price last confirmed 13 days ago
B
Retailer 9
-
$7,910 NZD
View
B
Retailer 10
-
$8,017 NZD
View
Retailer 11
-
$8,123 NZD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$8,148 NZD
View
B
Retailer 13
-
$8,408 NZD
View
Retailer 14
-
$8,659 NZD
View
Price last confirmed 29 days ago
B
Retailer 15
-
$8,931 NZD
View
B
Retailer 16
-
$9,121 NZD
View
B
Retailer 17
-
$9,238 NZD
View
B
Retailer 18
-
$10,481 NZD
View
B
Retailer 19
-
$12,429 NZD
View
Most Expensive
B
MOH London
CBFC25F1D · Nov 4
$13,645 NZD
£5,956 GBP
View
19 more retailers have this diamond
Prices start from $6,341 NZDSave up to $7,304 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
$6,341 NZD