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Marquise|Natural|GIA

1.20ct D SI2 Marquise Natural Diamond

EX • D/SI2 • GIA 6552169400

Certificate GIA 6552169400

Diamond specifications and retailer prices

From £2,543 GBP
As of November 6, 2026
Save £2,769 GBP (52%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £6,221 GBP at NZ Jewellers · As of September 17, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552169400. Listed at 15 retailers as of November 4, 2026, with a 109% 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552169400
Dimensions10.03 × 5.41 × 3.56 mm
L/W Ratio1.85
Top View
10.03 mm5.41 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552169400
Side View
Table 65.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 65.8%

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: £5,896 GBP|Low: £2,524 GBP|High: £5,943 GBP|Avg: £3,846 GBP|-0.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 13£2,543 GBP
Retailer 10£3,007 GBP
Retailer 4£3,087 GBP
Retailer 6£3,230 GBP
Retailer 2£3,288 GBP
Retailer 3£3,325 GBP
Retailer 7£3,367 GBP
Retailer 5£3,556 GBP
Retailer 12£3,619 GBP
Retailer 9£3,769 GBP
Retailer 11£5,096 GBP
Retailer 8£5,312 GBP
NZ Jewellers£5,896 GBP

29 data points across 13 retailers

15 retailers£2,543 GBP to £5,312 GBP

A
Cheapest Retailer
-
£2,543 GBP
A
Retailer 2
-
£3,007 GBP
View
B+
Retailer 3
-
£3,087 GBP
View
Final sale: no returns
B+
Retailer 4
-
£3,230 GBP
View
B+
Retailer 5
-
£3,288 GBP
View
B+
Retailer 6
-
£3,325 GBP
View
B+
Retailer 7
-
£3,367 GBP
View
B+
Retailer 8
-
£3,461 GBP
View
B+
Retailer 9
-
£3,556 GBP
View
B+
Retailer 10
-
£3,619 GBP
View
B+
Retailer 11
-
£3,769 GBP
View
B
Retailer 12
-
£5,096 GBP
View
B
Retailer 13
-
£5,312 GBP
View
Retailer 14
-
£5,896 GBP
View
Price last confirmed 13 days ago
Most Expensive
NZ Jewellers
38b22007-0e56-43a9-8be0-880f7b849fc5 · Sep 17
£6,221 GBP
$8,327 USD
View
Price last confirmed 49 days ago
14 more retailers have this diamond
Prices start from £2,543 GBPSave up to £2,769 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
£2,543 GBP