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Marquise|Natural|GIA

1.20ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 2567792143

Certificate GIA 2567792143

Diamond specifications and retailer prices

From $5,197 AUD
As of November 6, 2026
Save $5,812 AUD (53%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $11,009 AUD at MOH London · As of November 7, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2567792143. Listed at 12 retailers as of November 6, 2026, with prices from $5,197 to $11,009, a $5,812 spread on the same certified stone. MOH London lists it at $11,009. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2567792143
Dimensions10.50 × 5.50 × 3.48 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural, Natural
Top View
10.50 mm5.50 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2567792143
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.2%

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: $11,009 AUD|Low: $5,197 AUD|High: $11,009 AUD|Avg: $7,037 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 8$5,197 AUD
Retailer 7$5,414 AUD
Retailer 5$6,415 AUD
Retailer 4$6,557 AUD
Retailer 9$6,741 AUD
Retailer 2$6,842 AUD
Retailer 6$7,073 AUD
Retailer 10$7,168 AUD
Retailer 11$8,019 AUD
Retailer 3$8,479 AUD
MOH London$11,009 AUD

3 data points across 11 retailers

12 retailers$5,197 AUD to $11,009 AUD

A
Cheapest Retailer
-
$5,197 AUD
B+
Retailer 2
-
$5,414 AUD
View
B+
Retailer 3
-
$5,974 AUD
View
B+
Retailer 4
-
$6,415 AUD
View
Final sale: no returns
B+
Retailer 5
-
$6,557 AUD
View
B
Retailer 6
-
$6,741 AUD
View
B
Retailer 7
-
$6,842 AUD
View
B+
Retailer 8
-
$7,073 AUD
View
B+
Retailer 9
-
$7,168 AUD
View
B
Retailer 10
-
$8,019 AUD
View
B
Retailer 11
-
$8,479 AUD
View
Most Expensive
B
MOH London
7CEE5CF2E · Nov 7
$11,009 AUD
£5,956 GBP
View
11 more retailers have this diamond
Prices start from $5,197 AUDSave up to $5,812 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
$5,197 AUD