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Marquise|Natural|GIA

1.20ct G SI2 Marquise Natural Diamond

GD • G/SI2 • GIA 6551200456

Certificate GIA 6551200456

Diamond specifications and retailer prices

From £2,471 GBP
As of November 6, 2026
Save £2,748 GBP (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £5,219 GBP 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6551200456. Listed at 21 retailers as of November 4, 2026, with prices from £2,471 to £5,219, a £2,748 spread on the same certified stone. MOH London lists it at £5,219. 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
G
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle43.77°
Pavilion angle40.27°
OriginNatural
Grading LabGIA
CertificateGIA 6551200456
Dimensions9.73 × 5.34 × 3.54 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.73 mm5.34 mm1.20 ctG / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6551200456
Side View
Table 64.0%Crown 43.77°Girdle: MED-VTKPavilion 40.27°Culet: NoneDepth 66.2%

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 6
Current: £5,219 GBP|Low: £1,765 GBP|High: £5,219 GBP|Avg: £2,609 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 6, 2026
Retailer 12£1,765 GBP
Retailer 11£2,365 GBP
Retailer 15£2,471 GBP
Retailer 3£2,527 GBP
Retailer 10£2,532 GBP
Retailer 9£2,540 GBP
Retailer 16£2,589 GBP
Retailer 6£2,592 GBP
Retailer 18£2,619 GBP
Retailer 19£2,747 GBP
Retailer 13£2,969 GBP
Retailer 7£3,148 GBP
Retailer 2£3,231 GBP
Retailer 17£3,328 GBP
Retailer 4£3,355 GBP
Retailer 5£3,355 GBP
Retailer 8£3,467 GBP
Retailer 14£3,488 GBP
Retailer 20£4,751 GBP
MOH London£5,219 GBP

33 data points across 20 retailers

21 retailers£2,471 GBP to £5,219 GBP

Retailer 1
-
£2,365 GBP
Price last confirmed 16 days ago
A
Retailer 2
-
£2,471 GBP
View
B+
Retailer 3
-
£2,527 GBP
View
Retailer 4
-
£2,532 GBP
View
Price last confirmed 17 days ago
Retailer 5
-
£2,540 GBP
View
Price last confirmed 16 days ago
B+
Retailer 6
-
£2,589 GBP
View
B+
Retailer 7
-
£2,592 GBP
View
B+
Retailer 8
-
£2,619 GBP
View
B+
Retailer 9
-
£2,723 GBP
View
B+
Retailer 10
-
£2,747 GBP
View
Final sale: no returns
B+
Retailer 11
-
£2,841 GBP
View
B+
Retailer 12
-
£2,969 GBP
View
B
Retailer 13
-
£3,148 GBP
View
B
Retailer 14
-
£3,231 GBP
View
B
Retailer 15
-
£3,328 GBP
View
B
Retailer 16
-
£3,355 GBP
View
B
Retailer 17
-
£3,355 GBP
View
B
Retailer 18
-
£3,467 GBP
View
B
Retailer 19
-
£3,488 GBP
View
C
Retailer 20
-
£4,751 GBP
View
Most Expensive
C
MOH London
FEED6857D · Nov 4
£5,219 GBP
View
20 more retailers have this diamond
Prices start from £2,471 GBPSave up to £2,748 GBP

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
£2,471 GBP