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Marquise|Natural|GIA

1.20ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 6565283603

Certificate GIA 6565283603

Diamond specifications and retailer prices

From £2,142 GBP
As of November 6, 2026
Save £2,850 GBP (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,992 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 6565283603. Listed at 16 retailers as of November 5, 2026, with prices from £2,142 to £4,992, a £2,850 spread on the same certified stone. NZ Jewellers lists it at £4,992. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565283603
Dimensions10.59 × 5.58 × 3.55 mm
L/W Ratio1.90
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
10.59 mm5.58 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6565283603
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 63.6%

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 6
Current: £4,992 GBP|Low: £2,070 GBP|High: £5,110 GBP|Avg: £2,997 GBP|-2.3%
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
Retailer 15
Retailer 16
November 6, 2026
Retailer 13£2,142 GBP
Retailer 12£2,305 GBP
Retailer 14£2,395 GBP
Retailer 6£2,398 GBP
Retailer 5£2,409 GBP
Retailer 11£2,439 GBP
Retailer 15£2,596 GBP
Retailer 7£2,657 GBP
Retailer 16£2,696 GBP
Retailer 2£2,855 GBP
Retailer 10£2,885 GBP
Retailer 3£2,995 GBP
Retailer 8£3,320 GBP
Retailer 9£3,335 GBP
Retailer 4£4,905 GBP
NZ Jewellers£4,992 GBP

40 data points across 16 retailers

16 retailers£2,142 GBP to £4,992 GBP

B+
Cheapest Retailer
-
£2,142 GBP
B+
Retailer 2
-
£2,305 GBP
View
B
Retailer 3
-
£2,395 GBP
View
Final sale: no returns
B
Retailer 4
-
£2,398 GBP
View
B
Retailer 5
-
£2,409 GBP
View
B
Retailer 6
-
£2,439 GBP
View
B
Retailer 7
-
£2,596 GBP
View
Retailer 8
-
£2,657 GBP
View
Price last confirmed 9 days ago
B
Retailer 9
-
£2,696 GBP
View
B
Retailer 10
-
£2,855 GBP
View
B
Retailer 11
-
£2,885 GBP
View
B
Retailer 12
-
£2,988 GBP
View
B
Retailer 13
-
£2,995 GBP
View
B
Retailer 14
-
£3,335 GBP
View
B
Retailer 15
-
£4,905 GBP
View
Most Expensive
B
NZ Jewellers
a8e0ef56-9a38-4869-a38e-51cefdd1a697 · Nov 5
£4,992 GBP
$6,682 USD
View
15 more retailers have this diamond
Prices start from £2,142 GBPSave up to £2,850 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
£2,142 GBP