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Marquise|Natural|GIA

1.20ct D SI2 Marquise Natural Diamond

ID • D/SI2 • GIA 3555587349

Certificate GIA 3555587349

Diamond specifications and retailer prices

From $6,091 AUD
As of November 1, 2026
Save $6,856 AUD (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $14,014 AUD at NZ Jewellers · As of September 20, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3555587349. Listed at 17 retailers as of November 1, 2026, with a 113% 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
D
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555587349
Dimensions10.52 × 5.54 × 3.43 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cavity, Indented Natural, Cloud
Top View
10.52 mm5.54 mm1.20 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3555587349
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 61.9%

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 1
Current: $7,392 AUD|Low: $6,036 AUD|High: $13,017 AUD|Avg: $8,417 AUD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 9$6,091 AUD
Retailer 7$6,379 AUD
Retailer 4$7,143 AUD
Retailer 1$7,392 AUD
Retailer 3$7,503 AUD
Retailer 11$7,750 AUD
Retailer 6$7,930 AUD
Retailer 2$8,107 AUD
Retailer 12$8,354 AUD
Retailer 5$9,197 AUD
Retailer 10$11,717 AUD
Retailer 8$12,947 AUD

35 data points across 12 retailers

17 retailers$6,091 AUD to $12,947 AUD

A
Cheapest Retailer
-
$6,091 AUD
A
Retailer 2
-
$6,379 AUD
View
B+
Retailer 3
-
$7,143 AUD
View
B+
Retailer 4
-
$7,392 AUD
View
B+
Retailer 5
-
$7,644 AUD
View
Retailer 6
-
$7,750 AUD
View
Price last confirmed 11 days ago
B+
Retailer 7
-
$7,930 AUD
View
B+
Retailer 8
-
$8,011 AUD
View
B+
Retailer 9
-
$8,107 AUD
View
B+
Retailer 10
-
$8,354 AUD
View
Retailer 11
-
$8,379 AUD
View
Price last confirmed 46 days ago
Retailer 12
-
$8,379 AUD
View
Price last confirmed 26 days ago
B+
Retailer 13
-
$9,197 AUD
View
Retailer 14
-
$9,668 AUD
View
Price last confirmed 46 days ago
Retailer 15
-
$11,717 AUD
View
Price last confirmed 10 days ago
B
Retailer 16
-
$12,947 AUD
View
Most Expensive
NZ Jewellers
511f7a61-bfc8-4c98-b7d1-edb8b243d320 · Sep 20
$14,014 AUD
$9,629 USD
View
Price last confirmed 47 days ago
16 more retailers have this diamond
Prices start from $6,091 AUDSave up to $6,856 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
$6,091 AUD