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Marquise|Natural|GIA

1.20ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 7542999402

Certificate GIA 7542999402

Diamond specifications and retailer prices

From £1,931 GBP
As of November 5, 2026
Save £2,512 GBP (57%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £4,443 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7542999402. Listed at 22 retailers as of November 5, 2026, with prices from £1,931 to £4,443, a £2,512 spread on the same certified stone. NZ Jewellers lists it at £4,443. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.1°
Pavilion angle36°
OriginNatural
Grading LabGIA
CertificateGIA 7542999402
Dimensions9.97 × 5.39 × 3.57 mm
L/W Ratio1.85
Girdle conditionFaceted
Top View
9.97 mm5.39 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7542999402
Side View
Table 62.0%Crown 41.1°Girdle: MED-VTKPavilion 36°Culet: NoneDepth 66.2%

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 5
Current: £4,443 GBP|Low: £1,895 GBP|High: £4,458 GBP|Avg: £2,723 GBP|-0.3%
NZ Jewellers
Retailer 2
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Retailer 16
Retailer 17
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Retailer 22
November 7, 2026
Retailer 20£1,931 GBP
Retailer 13£2,069 GBP
Retailer 14£2,133 GBP
Retailer 3£2,140 GBP
Retailer 19£2,200 GBP
Retailer 22£2,310 GBP
Retailer 5£2,399 GBP
Retailer 12£2,425 GBP
Retailer 16£2,541 GBP
Retailer 6£2,555 GBP
Retailer 11£2,555 GBP
Retailer 2£2,639 GBP
Retailer 7£2,645 GBP
Retailer 18£2,666 GBP
Retailer 10£2,764 GBP
Retailer 8£2,814 GBP
Retailer 15£2,899 GBP
Retailer 17£2,968 GBP
Retailer 21£3,027 GBP
Retailer 9£3,089 GBP
Retailer 4£4,270 GBP
NZ Jewellers£4,443 GBP

26 data points across 22 retailers

22 retailers£1,931 GBP to £4,443 GBP

B+
Cheapest Retailer
-
£1,931 GBP
B+
Retailer 2
-
£2,069 GBP
View
B+
Retailer 3
-
£2,133 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,140 GBP
View
B+
Retailer 5
-
£2,200 GBP
View
B
Retailer 6
-
£2,310 GBP
View
B
Retailer 7
-
£2,399 GBP
View
B
Retailer 8
-
£2,425 GBP
View
B+
Retailer 9
-
£2,541 GBP
View
B+
Retailer 10
-
£2,555 GBP
View
B+
Retailer 11
-
£2,555 GBP
View
B+
Retailer 12
-
£2,639 GBP
View
B
Retailer 13
-
£2,645 GBP
View
B
Retailer 14
-
£2,666 GBP
View
B
Retailer 15
-
£2,764 GBP
View
B
Retailer 16
-
£2,814 GBP
View
Retailer 17
-
£2,899 GBP
View
Price last confirmed 25 days ago
B
Retailer 18
-
£2,968 GBP
View
B
Retailer 19
-
£3,027 GBP
View
Retailer 20
-
£3,089 GBP
View
Price last confirmed 9 days ago
B
Retailer 21
-
£4,270 GBP
View
Most Expensive
B
NZ Jewellers
20c75f28-2956-4641-a9e3-2d0ac41794c5 · Nov 5
£4,443 GBP
$5,947 USD
View
21 more retailers have this diamond
Prices start from £1,931 GBPSave up to £2,512 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
£1,931 GBP