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Marquise|Natural|GIA

1.20ct E SI1 Marquise Natural Diamond

GD • E/SI1 • GIA 1558328161

Certificate GIA 1558328161

Diamond specifications and retailer prices

From $5,198 AUD
As of November 4, 2026
Save $4,141 AUD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $9,339 AUD at Wholesale Diamonds Direct · As of November 4, 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 E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1558328161. Listed at 14 retailers as of November 4, 2026, with prices from $5,198 to $9,339, a $4,141 spread on the same certified stone. Wholesale Diamonds Direct lists it at $9,339. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
E
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.18°
Pavilion angle40.59°
OriginNatural
Grading LabGIA
CertificateGIA 1558328161
Dimensions9.88 × 5.42 × 3.67 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.88 mm5.42 mm1.20 ctE / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558328161
Side View
Table 57.0%Crown 42.18°Girdle: THN-VTKPavilion 40.59°Culet: NoneDepth 67.7%

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: $6,680 AUD|Low: $5,198 AUD|High: $9,900 AUD|Avg: $6,821 AUD|-6.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Wholesale Diamonds Direct
November 6, 2026
Retailer 8$5,198 AUD
Retailer 10$5,281 AUD
Retailer 7$5,433 AUD
Retailer 6$5,555 AUD
Retailer 3$5,674 AUD
Retailer 5$5,963 AUD
Retailer 11$6,588 AUD
Retailer 12$6,640 AUD
Retailer 4$6,668 AUD
Retailer 1$6,680 AUD
Retailer 9$8,767 AUD
Retailer 2$9,315 AUD
Wholesale Diamonds Direct$9,339 AUD

36 data points across 13 retailers

14 retailers$5,198 AUD to $9,339 AUD

A
Cheapest Retailer
-
$5,198 AUD
A
Retailer 2
-
$5,281 AUD
View
A
Retailer 3
-
$5,433 AUD
View
A
Retailer 4
-
$5,555 AUD
View
A
Retailer 5
-
$5,674 AUD
View
B+
Retailer 6
-
$5,963 AUD
View
B+
Retailer 7
-
$6,588 AUD
View
B+
Retailer 8
-
$6,640 AUD
View
B+
Retailer 9
-
$6,668 AUD
View
B+
Retailer 10
-
$6,680 AUD
View
B
Retailer 11
-
$7,445 AUD
View
B
Retailer 12
-
$8,767 AUD
View
B
Retailer 13
-
$9,315 AUD
View
Most Expensive
B
Wholesale Diamonds Direct
612458820 · Nov 4
$9,339 AUD
$6,538 USD
View
13 more retailers have this diamond
Prices start from $5,198 AUDSave up to $4,141 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
$5,198 AUD