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Marquise|Natural|GIA

1.20ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 7541378078

Certificate GIA 7541378078

Diamond specifications and retailer prices

From £4,314 GBP
As of November 6, 2026
Save £3,552 GBP (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £9,440 GBP at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7541378078. Listed at 14 retailers as of November 2, 2026, with a 82% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7541378078
Dimensions11.08 × 5.51 × 3.44 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizeNone
Cert comments
Additional twinning wisps, pinpoints and surface graining are not shown.
Top View
11.08 mm5.51 mm1.20 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7541378078
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.5%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £5,476 GBP|Low: £4,217 GBP|High: £7,960 GBP|Avg: £5,816 GBP|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5£4,720 GBP
Retailer 6£5,192 GBP
Retailer 3£5,321 GBP
Retailer 1£5,476 GBP
Retailer 7£5,900 GBP
Retailer 2£6,133 GBP
Retailer 4£7,866 GBP

40 data points across 7 retailers

14 retailers£4,314 GBP to £7,866 GBP

B+
Cheapest Retailer
-
£4,314 GBP
B+
Retailer 2
-
£4,427 GBP
View
B+
Retailer 3
-
£4,503 GBP
View
B+
Retailer 4
-
£4,658 GBP
View
B
Retailer 5
-
£4,720 GBP
View
Final sale: no returns
B
Retailer 6
-
£5,114 GBP
View
B
Retailer 7
-
£5,192 GBP
View
B
Retailer 8
-
£5,321 GBP
View
B
Retailer 9
-
£5,476 GBP
View
B
Retailer 10
-
£5,800 GBP
View
B
Retailer 11
-
£5,900 GBP
View
B
Retailer 12
-
£6,133 GBP
View
B
Retailer 13
-
£7,866 GBP
View
Most Expensive
NZ Jewellers
eef5a9a6-8ec8-4569-a35e-f93677fac71b · Nov 5
£9,440 GBP
$12,706 USD
View
Price under review
13 more retailers have this diamond
Prices start from £4,314 GBPSave up to £3,552 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
£4,314 GBP