Marquise|Natural|GIA

1.20ct H SI1 Marquise Natural Diamond

GD • H/SI1 • GIA 1559555055

Certificate GIA 1559555055

Diamond specifications and retailer prices

From $2,402 USD
As of November 5, 2026
Save $2,398 USD (50%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,800 USD 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 $2,402 to $4,800, a $2,398 spread on the same certified stone. Wholesale Diamonds Direct lists it at $4,800. 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
Color
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: $2,866 USD|Low: $2,389 USD|High: $5,394 USD|Avg: $3,626 USD|-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$2,402 USD
Retailer 4$2,658 USD
Retailer 1$2,866 USD
Retailer 8$3,202 USD
Retailer 6$3,426 USD
Retailer 9$3,468 USD
Retailer 7$3,517 USD
Retailer 2$3,535 USD
Retailer 5$4,484 USD
Wholesale Diamonds Direct$4,800 USD

33 data points across 10 retailers

11 retailers$2,402 USD to $4,800 USD

A
Cheapest Retailer
-
$2,402 USD
A
Retailer 2
-
$2,658 USD
View
B+
Retailer 3
-
$2,866 USD
View
B+
Retailer 4
-
$3,202 USD
View
B+
Retailer 5
-
$3,426 USD
View
B+
Retailer 6
-
$3,468 USD
View
B+
Retailer 7
-
$3,517 USD
View
B+
Retailer 8
-
$3,535 USD
View
B
Retailer 9
-
$4,087 USD
View
B
Retailer 10
-
$4,484 USD
View
Most Expensive
B
Wholesale Diamonds Direct
643535015 · Nov 6
$4,800 USD
View
10 more retailers have this diamond
Prices start from $2,402 USDSave up to $2,398 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
$2,402 USD