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Marquise|Natural|IGI

1.21ct H SI2 Marquise Natural Diamond

VG • H/SI2 • IGI 845614149

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 845614149

Diamond specifications and retailer prices

From £1,895 GBP
As of November 6, 2026
Save £2,528 GBP (57%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,424 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 845614149. Listed at 10 retailers as of November 5, 2026, with prices from £1,895 to £4,424, a £2,528 spread on the same certified stone. NZ Jewellers lists it at £4,424. 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
H
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle38.6°
OriginNatural
Grading LabIGI
CertificateIGI 845614149
Dimensions10.17 × 5.50 × 3.55 mm
L/W Ratio1.85
Girdle conditionFaceted
Top View
10.17 mm5.50 mm1.21 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 845614149
Side View
Table 57.0%Crown 40.1°Girdle: STK-THKPavilion 38.6°Culet: NoneDepth 64.5%

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: £4,424 GBP|Low: £1,895 GBP|High: £4,424 GBP|Avg: £2,516 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6£1,895 GBP
Retailer 10£2,032 GBP
Retailer 2£2,081 GBP
Retailer 9£2,116 GBP
Retailer 4£2,197 GBP
Retailer 7£2,222 GBP
Retailer 5£2,442 GBP
Retailer 8£2,481 GBP
Retailer 3£3,697 GBP
NZ Jewellers£4,424 GBP

7 data points across 10 retailers

10 retailers£1,895 GBP to £4,424 GBP

A
Cheapest Retailer
-
£1,895 GBP
B+
Retailer 2
-
£2,032 GBP
View
A
Retailer 3
-
£2,081 GBP
View
B+
Retailer 4
-
£2,116 GBP
View
B+
Retailer 5
-
£2,197 GBP
View
B+
Retailer 6
-
£2,222 GBP
View
B+
Retailer 7
-
£2,442 GBP
View
B+
Retailer 8
-
£2,481 GBP
View
B
Retailer 9
-
£3,697 GBP
View
Most Expensive
C
NZ Jewellers
90a096ac-b456-4c4f-90be-395bc1e32dda · Nov 5
£4,424 GBP
$5,921 USD
View
9 more retailers have this diamond
Prices start from £1,895 GBPSave up to £2,528 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
£1,895 GBP