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Marquise|Natural|GIA

1.20ct D SI2 Marquise Natural Diamond

EX • D/SI2 • GIA 6542700155

Certificate GIA 6542700155

Diamond specifications and retailer prices

From £3,615 GBP
As of November 4, 2026
Save £4,728 GBP (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £8,344 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 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 6542700155. Listed at 17 retailers as of November 4, 2026, with prices from £3,615 to £8,344, a £4,728 spread on the same certified stone. NZ Jewellers lists it at £8,344. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542700155
Dimensions10.78 × 5.84 × 3.37 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.78 mm5.84 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542700155
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 57.6%

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 4
Current: £8,344 GBP|Low: £3,615 GBP|High: £8,344 GBP|Avg: £5,269 GBP
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
Retailer 14
November 6, 2026
Retailer 9£3,615 GBP
Retailer 6£3,941 GBP
Retailer 11£3,948 GBP
Retailer 5£4,172 GBP
Retailer 4£4,519 GBP
Retailer 13£4,519 GBP
Retailer 14£4,519 GBP
Retailer 7£4,737 GBP
Retailer 2£4,906 GBP
Retailer 3£5,215 GBP
Retailer 10£5,429 GBP
Retailer 12£6,684 GBP
Retailer 8£7,329 GBP
NZ Jewellers£8,344 GBP

34 data points across 14 retailers

17 retailers£3,615 GBP to £8,344 GBP

B+
Cheapest Retailer
-
£3,615 GBP
B+
Retailer 2
-
£3,941 GBP
View
B+
Retailer 3
-
£3,948 GBP
View
B
Retailer 4
-
£4,024 GBP
View
B+
Retailer 5
-
£4,172 GBP
View
Final sale: no returns
B
Retailer 6
-
£4,457 GBP
View
Retailer 7
-
£4,519 GBP
View
Price last confirmed 8 days ago
B
Retailer 8
-
£4,519 GBP
View
B
Retailer 9
-
£4,519 GBP
View
B+
Retailer 10
-
£4,737 GBP
View
B
Retailer 11
-
£4,906 GBP
View
B
Retailer 12
-
£5,215 GBP
View
B
Retailer 13
-
£5,429 GBP
View
Retailer 14
-
£5,499 GBP
View
Price last confirmed 22 days ago
Retailer 15
-
£6,684 GBP
View
Price last confirmed 9 days ago
B
Retailer 16
-
£7,329 GBP
View
Most Expensive
B
NZ Jewellers
73677749-92f5-4f92-a800-ca5fbc3e2c78 · Nov 5
£8,344 GBP
$11,168 USD
View
16 more retailers have this diamond
Prices start from £3,615 GBPSave up to £4,728 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
£3,615 GBP