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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 £2,704 GBP
As of November 4, 2026
Save £2,154 GBP (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,857 GBP 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 £2,704 to £4,857, a £2,154 spread on the same certified stone. Wholesale Diamonds Direct lists it at £4,857. 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: £3,474 GBP|Low: £2,704 GBP|High: £5,149 GBP|Avg: £3,548 GBP|-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£2,704 GBP
Retailer 10£2,747 GBP
Retailer 7£2,826 GBP
Retailer 6£2,889 GBP
Retailer 3£2,951 GBP
Retailer 5£3,101 GBP
Retailer 11£3,427 GBP
Retailer 12£3,453 GBP
Retailer 4£3,468 GBP
Retailer 1£3,474 GBP
Retailer 9£4,560 GBP
Retailer 2£4,845 GBP
Wholesale Diamonds Direct£4,857 GBP

36 data points across 13 retailers

14 retailers£2,704 GBP to £4,857 GBP

A
Cheapest Retailer
-
£2,704 GBP
A
Retailer 2
-
£2,747 GBP
View
A
Retailer 3
-
£2,826 GBP
View
A
Retailer 4
-
£2,889 GBP
View
A
Retailer 5
-
£2,951 GBP
View
B+
Retailer 6
-
£3,101 GBP
View
B+
Retailer 7
-
£3,427 GBP
View
B+
Retailer 8
-
£3,453 GBP
View
B+
Retailer 9
-
£3,468 GBP
View
B+
Retailer 10
-
£3,474 GBP
View
B
Retailer 11
-
£3,872 GBP
View
B
Retailer 12
-
£4,560 GBP
View
B
Retailer 13
-
£4,845 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
612458820 · Nov 4
£4,857 GBP
$6,538 USD
View
13 more retailers have this diamond
Prices start from £2,704 GBPSave up to £2,154 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
£2,704 GBP