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Marquise|Natural|GIA

1.20ct H SI1 Marquise Natural Diamond

ID • H/SI1 • GIA 1553732833

Certificate GIA 1553732833

Diamond specifications and retailer prices

From $4,922 AUD
As of November 2, 2026
Save $3,871 AUD (44%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,794 AUD at NZ Jewellers · As of November 3, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553732833. Listed at 8 retailers as of November 2, 2026, with prices from $4,922 to $8,794, a $3,871 spread on the same certified stone. NZ Jewellers lists it at $8,794. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle41.36°
Pavilion angle40.79°
OriginNatural
Grading LabGIA
CertificateGIA 1553732833
Dimensions9.68 × 5.44 × 3.73 mm
L/W Ratio1.78
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Needle
Top View
9.68 mm5.44 mm1.20 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1553732833
Side View
Table 57.0%Crown 41.36°Girdle: THK-VTKPavilion 40.79°Culet: NoneDepth 68.5%

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 2
Current: $8,794 AUD|Low: $4,861 AUD|High: $9,409 AUD|Avg: $6,333 AUD|-6.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 3$4,922 AUD
Retailer 7$5,047 AUD
Retailer 2$5,050 AUD
Retailer 5$5,181 AUD
Retailer 6$5,241 AUD
Retailer 8$5,686 AUD
Retailer 4$8,441 AUD
NZ Jewellers$8,794 AUD

38 data points across 8 retailers

8 retailers$4,922 AUD to $8,794 AUD

B+
Cheapest Retailer
-
$4,922 AUD
B+
Retailer 2
-
$5,047 AUD
View
B+
Retailer 3
-
$5,050 AUD
View
B+
Retailer 4
-
$5,181 AUD
View
B+
Retailer 5
-
$5,241 AUD
View
Retailer 6
-
$5,686 AUD
View
Price last confirmed 30 days ago
B
Retailer 7
-
$8,441 AUD
View
Most Expensive
B
NZ Jewellers
857e2cb2-a4b0-4b3a-9072-4c8fbd91870c · Nov 3
$8,794 AUD
$6,042 USD
View
7 more retailers have this diamond
Prices start from $4,922 AUDSave up to $3,871 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.

B+
1.20ct Marquise
$4,922 AUD