CaratHunter
Plans
Marquise|Natural|GIA

1.20ct H SI1 Marquise Natural Diamond

GD • H/SI1 • GIA 1559555055

Certificate GIA 1559555055

Diamond specifications and retailer prices

From $3,496 AUD
As of November 5, 2026
Save $3,489 AUD (50%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,985 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1559555055. Listed at 11 retailers as of November 5, 2026, with prices from $3,496 to $6,985, a $3,489 spread on the same certified stone. Wholesale Diamonds Direct lists it at $6,985. 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
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.93°
Pavilion angle41.62°
OriginNatural
Grading LabGIA
CertificateGIA 1559555055
Dimensions9.84 × 5.39 × 3.65 mm
L/W Ratio1.83
Culet sizeNone
Top View
9.84 mm5.39 mm1.20 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559555055
Side View
Table 61.0%Crown 43.93°Girdle: THN-VTKPavilion 41.62°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 5
Current: $4,171 AUD|Low: $3,477 AUD|High: $7,850 AUD|Avg: $5,270 AUD|-11.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 6, 2026
Retailer 3$3,496 AUD
Retailer 4$3,868 AUD
Retailer 1$4,171 AUD
Retailer 8$4,660 AUD
Retailer 6$4,986 AUD
Retailer 9$5,047 AUD
Retailer 7$5,119 AUD
Retailer 2$5,145 AUD
Retailer 5$6,526 AUD
Wholesale Diamonds Direct$6,985 AUD

32 data points across 10 retailers

11 retailers$3,496 AUD to $6,985 AUD

A
Cheapest Retailer
-
$3,496 AUD
A
Retailer 2
-
$3,868 AUD
View
B+
Retailer 3
-
$4,171 AUD
View
B+
Retailer 4
-
$4,660 AUD
View
B+
Retailer 5
-
$4,986 AUD
View
B+
Retailer 6
-
$5,047 AUD
View
B+
Retailer 7
-
$5,119 AUD
View
B+
Retailer 8
-
$5,145 AUD
View
B
Retailer 9
-
$5,948 AUD
View
B
Retailer 10
-
$6,526 AUD
View
Most Expensive
B
Wholesale Diamonds Direct
643535015 · Nov 6
$6,985 AUD
$4,800 USD
View
10 more retailers have this diamond
Prices start from $3,496 AUDSave up to $3,489 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
$3,496 AUD