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Marquise|Natural|GIA

1.20ct E SI2 Marquise Natural Diamond

VG • E/SI2 • GIA 2556641650

Certificate GIA 2556641650

Diamond specifications and retailer prices

From £4,163 GBP
As of November 5, 2026
Save £715 GBP (15%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £7,713 GBP at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2556641650. Listed at 15 retailers as of November 5, 2026, with a relatively tight 17% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.81°
Pavilion angle36.64°
OriginNatural
Grading LabGIA
CertificateGIA 2556641650
Dimensions10.72 × 5.53 × 3.18 mm
L/W Ratio1.94
Culet sizeNone
Top View
10.72 mm5.53 mm1.20 ctE / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556641650
Side View
Table 61.0%Crown 35.81°Girdle: THN-VTKPavilion 36.64°Culet: NoneDepth 57.4%

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 5
Current: £4,878 GBP|Low: £3,497 GBP|High: £6,876 GBP|Avg: £4,459 GBP|+18.8%
Retailer 1
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
November 6, 2026
Retailer 11£3,497 GBP
Retailer 8£3,498 GBP
Retailer 5£3,644 GBP
Retailer 17£3,889 GBP
Retailer 9£4,069 GBP
Retailer 2£4,127 GBP
Retailer 15£4,163 GBP
Retailer 18£4,178 GBP
Retailer 16£4,390 GBP
Retailer 12£4,445 GBP
Retailer 7£4,446 GBP
Retailer 3£4,666 GBP
Retailer 19£4,666 GBP
Retailer 4£4,822 GBP
Retailer 1£4,878 GBP
Retailer 10£4,996 GBP
Retailer 13£5,002 GBP
Retailer 6£5,085 GBP
Retailer 14£6,830 GBP

24 data points across 19 retailers

15 retailers£4,163 GBP to £4,878 GBP

Retailer 1
-
£3,644 GBP
Price last confirmed 17 days ago
Retailer 2
-
£3,889 GBP
View
Price last confirmed 17 days ago
Retailer 3
-
£4,127 GBP
View
Price last confirmed 19 days ago
B+
Retailer 4
-
£4,163 GBP
View
Retailer 5
-
£4,178 GBP
View
Price last confirmed 45 days ago
Retailer 6
-
£4,178 GBP
View
Price last confirmed 21 days ago
Retailer 7
-
£4,178 GBP
View
Price last confirmed 20 days ago
Retailer 8
-
£4,178 GBP
View
Price last confirmed 17 days ago
B
Retailer 9
-
£4,390 GBP
View
Retailer 10
-
£4,445 GBP
View
Price last confirmed 16 days ago
Retailer 11
-
£4,821 GBP
View
Price last confirmed 45 days ago
B
Retailer 12
-
£4,878 GBP
View
Retailer 13
-
£5,085 GBP
View
Price last confirmed 22 days ago
Retailer 14
-
£6,830 GBP
View
Price last confirmed 18 days ago
Most Expensive
NZ Jewellers
79785c72-6f9c-4e12-92bc-13f027bcf3ff · Sep 20
£7,713 GBP
$10,381 USD
View
Price last confirmed 46 days ago
14 more retailers have this diamond
Prices start from £4,163 GBPSave up to £715 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.

B+
1.20ct Marquise
£4,163 GBP