CaratHunter
Plans
Marquise|Natural|GIA

1.20ct G SI2 Marquise Natural Diamond

GD • G/SI2 • GIA 6551200456

Certificate GIA 6551200456

Diamond specifications and retailer prices

From $4,813 AUD
As of November 6, 2026
Save $5,353 AUD (53%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $10,166 AUD 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 22 retailers as of November 4, 2026, with prices from $4,813 to $10,166, a $5,353 spread on the same certified stone. MOH London lists it at $10,166. 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 6
Current: $10,166 AUD|Low: $3,438 AUD|High: $10,166 AUD|Avg: $5,145 AUD
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
Retailer 20
Retailer 21
November 7, 2026
Retailer 14$3,438 AUD
Retailer 12$4,606 AUD
Retailer 18$4,813 AUD
Retailer 4$4,922 AUD
Retailer 11$4,932 AUD
Retailer 10$4,948 AUD
Retailer 19$5,043 AUD
Retailer 7$5,049 AUD
Retailer 20$5,101 AUD
Retailer 21$5,352 AUD
Retailer 16$5,784 AUD
Retailer 8$6,132 AUD
Retailer 15$6,293 AUD
Retailer 2$6,482 AUD
Retailer 5$6,535 AUD
Retailer 6$6,535 AUD
Retailer 9$6,753 AUD
Retailer 17$6,794 AUD
Retailer 13$7,345 AUD
Retailer 3$9,255 AUD
MOH London$10,166 AUD

33 data points across 21 retailers

22 retailers$4,813 AUD to $10,166 AUD

Retailer 1
-
$4,606 AUD
Price last confirmed 17 days ago
A
Retailer 2
-
$4,813 AUD
View
B+
Retailer 3
-
$4,922 AUD
View
Retailer 4
-
$4,932 AUD
View
Price last confirmed 18 days ago
Retailer 5
-
$4,948 AUD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$5,043 AUD
View
B+
Retailer 7
-
$5,049 AUD
View
B+
Retailer 8
-
$5,101 AUD
View
B+
Retailer 9
-
$5,305 AUD
View
B+
Retailer 10
-
$5,352 AUD
View
Final sale: no returns
B+
Retailer 11
-
$5,535 AUD
View
B+
Retailer 12
-
$5,784 AUD
View
B
Retailer 13
-
$6,132 AUD
View
B
Retailer 14
-
$6,293 AUD
View
B
Retailer 15
-
$6,482 AUD
View
B
Retailer 16
-
$6,535 AUD
View
B
Retailer 17
-
$6,535 AUD
View
B
Retailer 18
-
$6,753 AUD
View
B
Retailer 19
-
$6,794 AUD
View
B
Retailer 20
-
$7,345 AUD
View
C
Retailer 21
-
$9,255 AUD
View
Most Expensive
C
MOH London
FEED6857D · Nov 4
$10,166 AUD
£5,500 GBP
View
21 more retailers have this diamond
Prices start from $4,813 AUDSave up to $5,353 AUD

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
$4,813 AUD