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Marquise|Natural|IGI

1.21ct I VS1 Marquise Natural Diamond

VG • I/VS1 • IGI 782657354

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 782657354

Diamond specifications and retailer prices

From £2,183 GBP
As of November 4, 2026
Save £1,708 GBP (44%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,054 GBP at NZ Jewellers · As of September 20, 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 I colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI 782657354. Listed at 8 retailers as of November 2, 2026, with a 78% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 782657354
Dimensions10.02 × 5.49 × 3.72 mm
L/W Ratio1.83
Girdle conditionFaceted
Culet sizePointed
Top View
10.02 mm5.49 mm1.21 ctI / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 782657354
Side View
Table 60.0%Crown 39.6°Girdle: ThickPavilion 41.5°Culet: NoneDepth 67.8%

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 4
Current: £3,161 GBP|Low: £2,149 GBP|High: £3,939 GBP|Avg: £2,726 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5£2,183 GBP
Retailer 3£2,223 GBP
Retailer 6£2,262 GBP
Retailer 2£2,416 GBP
Retailer 7£2,586 GBP
Retailer 8£3,057 GBP
Retailer 1£3,161 GBP
Retailer 4£3,891 GBP

26 data points across 8 retailers

8 retailers£2,183 GBP to £3,891 GBP

A
Cheapest Retailer
-
£2,183 GBP
A
Retailer 2
-
£2,223 GBP
View
A
Retailer 3
-
£2,262 GBP
View
Retailer 4
-
£2,327 GBP
View
Price last confirmed 44 days ago
A
Retailer 5
-
£2,416 GBP
View
Retailer 6
-
£3,161 GBP
View
B+
Retailer 7
-
£3,891 GBP
View
Most Expensive
NZ Jewellers
3d650e6d-08db-47c8-b792-5a3aeae42735 · Sep 20
£4,054 GBP
$5,457 USD
View
Price last confirmed 46 days ago
7 more retailers have this diamond
Prices start from £2,183 GBPSave up to £1,708 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
£2,183 GBP