Marquise|Natural|GIA

1.20ct F SI1 Marquise Natural Diamond

VG • F/SI1 • GIA 2557770054

Certificate GIA 2557770054

Diamond specifications and retailer prices

From $4,846 USD
As of November 4, 2026
Save $4,166 USD (46%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $9,012 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557770054. Listed at 20 retailers as of November 4, 2026, with prices from $4,846 to $9,012, a $4,166 spread on the same certified stone. MOH London lists it at $9,012. 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
F
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle41.01°
Pavilion angle40.15°
OriginNatural
Grading LabGIA
CertificateGIA 2557770054
Dimensions10.07 × 5.44 × 3.55 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.07 mm5.44 mm1.20 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557770054
Side View
Table 59.0%Crown 41.01°Girdle: STK-VTKPavilion 40.15°Culet: NoneDepth 65.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $9,012 USD|Low: $4,427 USD|High: $9,145 USD|Avg: $6,114 USD|-1.5%
MOH London
Retailer 2
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Retailer 24
November 6, 2026
Retailer 16$4,427 USD
Retailer 14$4,704 USD
Retailer 9$4,846 USD
Retailer 10$5,200 USD
Retailer 7$5,490 USD
Retailer 3$5,535 USD
Retailer 23$5,792 USD
Retailer 20$5,826 USD
Retailer 4$5,838 USD
Retailer 13$5,950 USD
Retailer 12$5,980 USD
Retailer 2$6,055 USD
Retailer 8$6,094 USD
Retailer 6$6,210 USD
Retailer 24$6,210 USD
Retailer 5$6,410 USD
Retailer 22$6,411 USD
Retailer 18$6,487 USD
Retailer 19$6,664 USD
Retailer 11$6,764 USD
Retailer 17$7,269 USD
Retailer 21$7,483 USD
Retailer 15$7,685 USD
MOH London$9,012 USD

20 data points across 24 retailers

20 retailers$4,846 USD to $9,012 USD

B+
Cheapest Retailer
-
$4,846 USD
B
Retailer 2
-
$5,200 USD
View
B
Retailer 3
-
$5,490 USD
View
B
Retailer 4
-
$5,535 USD
View
Retailer 5
-
$5,556 USD
View
Price last confirmed 30 days ago
B
Retailer 6
-
$5,792 USD
View
B
Retailer 7
-
$5,826 USD
View
B
Retailer 8
-
$5,838 USD
View
B
Retailer 9
-
$5,950 USD
View
Retailer 10
-
$6,055 USD
View
Retailer 11
-
$6,094 USD
View
Price last confirmed 34 days ago
B
Retailer 12
-
$6,210 USD
View
B
Retailer 13
-
$6,210 USD
View
B
Retailer 14
-
$6,410 USD
View
B
Retailer 15
-
$6,411 USD
View
B
Retailer 16
-
$6,487 USD
View
B
Retailer 17
-
$6,664 USD
View
Retailer 18
-
$6,764 USD
View
Price last confirmed 29 days ago
B
Retailer 19
-
$7,483 USD
View
Most Expensive
B
MOH London
3DCC2BDE9 · Nov 4
$9,012 USD
£7,096 GBP
View
19 more retailers have this diamond
Prices start from $4,846 USDSave up to $4,166 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.

B+
1.20ct Marquise
$4,846 USD