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Marquise|Natural|GIA

1.20ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 2556199559

Certificate GIA 2556199559

Diamond specifications and retailer prices

From $4,133 AUD
As of November 4, 2026
Save $3,252 AUD (44%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,386 AUD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded I 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 2556199559. Listed at 11 retailers as of November 4, 2026, with prices from $4,133 to $7,386, a $3,252 spread on the same certified stone. Wholesale Diamonds Direct lists it at $7,386. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.64°
Pavilion angle39.18°
OriginNatural
Grading LabGIA
CertificateGIA 2556199559
Dimensions11.28 × 5.34 × 3.34 mm
L/W Ratio2.11
Top View
11.28 mm5.34 mm1.20 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556199559
Side View
Table 59.0%Crown 39.64°Girdle: MED-THKPavilion 39.18°Culet: NoneDepth 62.5%

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 4
Current: $4,825 AUD|Low: $4,133 AUD|High: $8,146 AUD|Avg: $5,259 AUD|-5.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 7, 2026
Retailer 5$4,133 AUD
Retailer 4$4,234 AUD
Retailer 2$4,398 AUD
Retailer 6$4,456 AUD
Retailer 1$4,825 AUD
Retailer 9$4,979 AUD
Retailer 7$5,308 AUD
Retailer 8$5,424 AUD
Retailer 3$5,499 AUD
Wholesale Diamonds Direct$7,386 AUD

40 data points across 10 retailers

11 retailers$4,133 AUD to $7,386 AUD

A
Cheapest Retailer
-
$4,133 AUD
A
Retailer 2
-
$4,234 AUD
View
A
Retailer 3
-
$4,398 AUD
View
A
Retailer 4
-
$4,456 AUD
View
B+
Retailer 5
-
$4,825 AUD
View
B+
Retailer 6
-
$4,979 AUD
View
B+
Retailer 7
-
$5,308 AUD
View
B+
Retailer 8
-
$5,424 AUD
View
B+
Retailer 9
-
$5,499 AUD
View
B
Retailer 10
-
$5,982 AUD
View
Most Expensive
B
Wholesale Diamonds Direct
369337227 · Nov 6
$7,386 AUD
$5,075 USD
View
10 more retailers have this diamond
Prices start from $4,133 AUDSave up to $3,252 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
$4,133 AUD