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Marquise|Natural|GIA

1.20ct G SI2 Marquise Natural Diamond

GD • G/SI2 • GIA 6551200456

Certificate GIA 6551200456

Diamond specifications and retailer prices

From $5,883 NZD
As of November 5, 2026
Save $6,543 NZD (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,426 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6551200456. Listed at 19 retailers as of November 4, 2026, with prices from $5,883 to $12,426, a $6,543 spread on the same certified stone. MOH London lists it at $12,426. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
G
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle43.77°
Pavilion angle40.27°
OriginNatural
Grading LabGIA
CertificateGIA 6551200456
Dimensions9.73 × 5.34 × 3.54 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.73 mm5.34 mm1.20 ctG / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6551200456
Side View
Table 64.0%Crown 43.77°Girdle: MED-VTKPavilion 40.27°Culet: NoneDepth 66.2%

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 5
Current: $12,426 NZD|Low: $4,202 NZD|High: $12,426 NZD|Avg: $6,171 NZD
MOH London
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
November 5, 2026
Retailer 11$4,202 NZD
Retailer 10$5,630 NZD
Retailer 12$5,883 NZD
Retailer 18$6,016 NZD
Retailer 9$6,029 NZD
Retailer 8$6,048 NZD
Retailer 13$6,164 NZD
Retailer 4$6,171 NZD
Retailer 7$6,210 NZD
Retailer 15$6,235 NZD
Retailer 16$6,541 NZD
Retailer 5$7,495 NZD
Retailer 2$7,687 NZD
Retailer 14$7,923 NZD
Retailer 3$7,987 NZD
Retailer 19$7,987 NZD
Retailer 6$8,254 NZD
Retailer 17$11,312 NZD
MOH London$12,426 NZD

33 data points across 19 retailers

19 retailers$5,883 NZD to $12,426 NZD

Retailer 1
-
$5,630 NZD
Price last confirmed 15 days ago
A
Retailer 2
-
$5,883 NZD
View
B+
Retailer 3
-
$6,016 NZD
View
Retailer 4
-
$6,029 NZD
View
Price last confirmed 16 days ago
Retailer 5
-
$6,048 NZD
View
Price last confirmed 15 days ago
B+
Retailer 6
-
$6,164 NZD
View
B+
Retailer 7
-
$6,171 NZD
View
B+
Retailer 8
-
$6,235 NZD
View
B+
Retailer 9
-
$6,484 NZD
View
B+
Retailer 10
-
$6,541 NZD
View
Final sale: no returns
B+
Retailer 11
-
$6,765 NZD
View
B
Retailer 12
-
$7,495 NZD
View
B
Retailer 13
-
$7,687 NZD
View
B
Retailer 14
-
$7,923 NZD
View
B
Retailer 15
-
$7,987 NZD
View
B
Retailer 16
-
$7,987 NZD
View
B
Retailer 17
-
$8,254 NZD
View
C
Retailer 18
-
$11,312 NZD
View
Most Expensive
C
MOH London
FEED6857D · Nov 4
$12,426 NZD
£5,500 GBP
View
18 more retailers have this diamond
Prices start from $5,883 NZDSave up to $6,543 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
$5,883 NZD