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Marquise|Natural|GIA

1.20ct H SI2 Marquise Natural Diamond

ID • H/SI2 • GIA 2245019738

Certificate GIA 2245019738

Diamond specifications and retailer prices

From $3,633 AUD
As of November 6, 2026
Save $4,810 AUD (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,892 AUD at NZ Jewellers · As of September 30, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245019738. Listed at 13 retailers as of November 4, 2026, with a 132% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2245019738
Dimensions10.38 × 5.60 × 3.49 mm
L/W Ratio1.85
Girdle conditionFaceted
Top View
10.38 mm5.60 mm1.20 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2245019738
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,615 AUD|Low: $3,633 AUD|High: $8,638 AUD|Avg: $5,106 AUD|-3.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 7$3,633 AUD
Retailer 2$3,835 AUD
Retailer 3$3,911 AUD
Retailer 11$4,015 AUD
Retailer 4$4,113 AUD
Retailer 8$4,439 AUD
Retailer 6$4,541 AUD
Retailer 1$4,615 AUD
Retailer 9$5,515 AUD
Retailer 5$7,265 AUD
Retailer 10$8,443 AUD

42 data points across 11 retailers

13 retailers$3,633 AUD to $8,443 AUD

A
Cheapest Retailer
-
$3,633 AUD
A
Retailer 2
-
$3,835 AUD
View
A
Retailer 3
-
$3,911 AUD
View
A
Retailer 4
-
$4,015 AUD
View
A
Retailer 5
-
$4,113 AUD
View
Final sale: no returns
A
Retailer 6
-
$4,439 AUD
View
A
Retailer 7
-
$4,541 AUD
View
A
Retailer 8
-
$4,615 AUD
View
B+
Retailer 9
-
$5,087 AUD
View
B+
Retailer 10
-
$5,515 AUD
View
B
Retailer 11
-
$7,265 AUD
View
B
Retailer 12
-
$8,443 AUD
View
Most Expensive
NZ Jewellers
9e961de1-7eed-4ec8-b3b7-9dc5e0a491bd · Sep 30
$8,892 AUD
$6,110 USD
View
Price last confirmed 37 days ago
12 more retailers have this diamond
Prices start from $3,633 AUDSave up to $4,810 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
$3,633 AUD