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Marquise|Natural|IGI

1.21ct I SI2 Marquise Natural Diamond

VG • I/SI2 • IGI 819641821

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 819641821

Diamond specifications and retailer prices

From £1,477 GBP
As of November 6, 2026
Save £969 GBP (40%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £2,446 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

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 SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 819641821. Listed at 6 retailers as of November 6, 2026, with prices from £1,477 to £2,446, a £969 spread on the same certified stone. Wholesale Diamonds Direct lists it at £2,446. 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
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.3°
Pavilion angle39.9°
OriginNatural
Grading LabIGI
CertificateIGI 819641821
Dimensions10.21 × 5.51 × 3.52 mm
L/W Ratio1.85
Girdle conditionFaceted
Top View
10.21 mm5.51 mm1.21 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 819641821
Side View
Table 59.0%Crown 39.3°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 63.9%

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: £1,477 GBP|Low: £1,472 GBP|High: £2,747 GBP|Avg: £1,920 GBP|-11.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Wholesale Diamonds Direct
November 6, 2026
Retailer 1£1,477 GBP
Retailer 3£1,480 GBP
Retailer 5£1,528 GBP
Retailer 4£1,889 GBP
Retailer 2£2,089 GBP
Wholesale Diamonds Direct£2,446 GBP

30 data points across 6 retailers

6 retailers£1,477 GBP to £2,446 GBP

A
Cheapest Retailer
-
£1,477 GBP
A
Retailer 2
-
£1,480 GBP
View
A
Retailer 3
-
£1,528 GBP
View
A
Retailer 4
-
£1,889 GBP
View
B+
Retailer 5
-
£2,089 GBP
View
Most Expensive
B+
Wholesale Diamonds Direct
413305093 · Nov 6
£2,446 GBP
$3,274 USD
View
5 more retailers have this diamond
Prices start from £1,477 GBPSave up to £969 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
£1,477 GBP