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Marquise|Natural|IGI

1.21ct J SI1 Marquise Natural Diamond

VG • J/SI1 • IGI 743559060

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 743559060

Diamond specifications and retailer prices

From £1,482 GBP
As of November 6, 2026
Save £1,875 GBP (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,358 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 743559060. Listed at 18 retailers as of November 5, 2026, with prices from £1,482 to £3,358, a £1,875 spread on the same certified stone. NZ Jewellers lists it at £3,358. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle43.4°
Pavilion angle39.1°
OriginNatural
Grading LabIGI
CertificateIGI 743559060
Dimensions10.98 × 5.45 × 3.37 mm
L/W Ratio2.01
Girdle conditionFaceted
Top View
10.98 mm5.45 mm1.21 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 743559060
Side View
Table 60.0%Crown 43.4°Girdle: THN-STKPavilion 39.1°Culet: NoneDepth 61.8%

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: £3,358 GBP|Low: £1,482 GBP|High: £3,358 GBP|Avg: £1,839 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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 5£1,482 GBP
Retailer 6£1,489 GBP
Retailer 16£1,490 GBP
Retailer 10£1,494 GBP
Retailer 9£1,538 GBP
Retailer 11£1,558 GBP
Retailer 4£1,606 GBP
Retailer 18£1,606 GBP
Retailer 8£1,679 GBP
Retailer 3£1,680 GBP
Retailer 17£1,709 GBP
Retailer 14£1,775 GBP
Retailer 2£1,786 GBP
Retailer 7£1,853 GBP
Retailer 13£1,960 GBP
Retailer 12£2,182 GBP
Retailer 15£2,806 GBP
NZ Jewellers£3,358 GBP

26 data points across 18 retailers

18 retailers£1,482 GBP to £3,358 GBP

B+
Cheapest Retailer
-
£1,482 GBP
Final sale: no returns
A
Retailer 2
-
£1,489 GBP
View
A
Retailer 3
-
£1,490 GBP
View
A
Retailer 4
-
£1,494 GBP
View
A
Retailer 5
-
£1,538 GBP
View
A
Retailer 6
-
£1,558 GBP
View
A
Retailer 7
-
£1,606 GBP
View
Retailer 8
-
£1,606 GBP
View
Price last confirmed 9 days ago
A
Retailer 9
-
£1,679 GBP
View
B+
Retailer 10
-
£1,680 GBP
View
B+
Retailer 11
-
£1,709 GBP
View
B+
Retailer 12
-
£1,775 GBP
View
B+
Retailer 13
-
£1,786 GBP
View
B+
Retailer 14
-
£1,853 GBP
View
B+
Retailer 15
-
£1,960 GBP
View
B
Retailer 16
-
£2,182 GBP
View
B
Retailer 17
-
£2,806 GBP
View
Most Expensive
B
NZ Jewellers
a59d7b72-179e-449d-a06b-0a4d91e7de12 · Nov 5
£3,358 GBP
$4,494 USD
View
17 more retailers have this diamond
Prices start from £1,482 GBPSave up to £1,875 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
1.21ct Marquise
£1,482 GBP