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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 $4,186 USD
HK$32,700 HKD
As of November 1, 2026
Save $4,711 USD (53%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $9,629 USD 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 18 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
Color
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: $5,450 USD|Low: $4,147 USD|High: $8,945 USD|Avg: $5,876 USD|-2.7%
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 2, 2026
Retailer 7$4,186 USD
Retailer 5$4,383 USD
Retailer 3$4,908 USD
Retailer 4$5,051 USD
Retailer 2$5,155 USD
Retailer 10$5,326 USD
Retailer 1$5,450 USD
Retailer 12$5,570 USD
Retailer 11$5,740 USD
Retailer 8$6,321 USD
Retailer 9$8,052 USD
Retailer 6$8,896 USD

34 data points across 12 retailers

18 retailers$4,186 USD to $8,896 USD

A
Cheapest Retailer
-
$4,186 USD
HK$32,700 HKD
A
Retailer 2
-
$4,383 USD
₹417,450 INR
View
B+
Retailer 3
-
$4,908 USD
View
B+
Retailer 4
-
$5,051 USD
SGD 6,826 SGD
View
B+
Retailer 5
-
$5,155 USD
View
Final sale: no returns
B+
Retailer 6
-
$5,252 USD
View
B+
Retailer 7
-
$5,326 USD
SGD 7,197 SGD
View
B+
Retailer 8
-
$5,450 USD
£4,291 GBP
View
B+
Retailer 9
-
$5,504 USD
A$8,468 AUD
View
B+
Retailer 10
-
$5,570 USD
View
B+
Retailer 11
-
$5,740 USD
View
Retailer 12
-
$5,757 USD
View
Price last confirmed 40 days ago
Retailer 13
-
$5,757 USD
View
Price last confirmed 21 days ago
B
Retailer 14
-
$6,321 USD
€6,020 EUR
View
Retailer 15
-
$6,643 USD
View
Price last confirmed 41 days ago
B
Retailer 16
-
$8,052 USD
£6,340 GBP
View
B
Retailer 17
-
$8,896 USD
£7,005 GBP
View
Most Expensive
NZ Jewellers
511f7a61-bfc8-4c98-b7d1-edb8b243d320 · Sep 20
$9,629 USD
View
Price last confirmed 42 days ago
17 more retailers have this diamond
Prices start from $4,186 USDSave up to $4,711 USD

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
$4,186 USD