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Marquise|Natural|IGI

1.22ct K SI1 Marquise Natural Diamond

VG • K/SI1 • IGI 790682820

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 790682820

Diamond specifications and retailer prices

From £1,845 GBP
As of November 4, 2026
Save £2,462 GBP (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,306 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.22ct natural marquise diamond

This 1.22ct natural marquise sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 790682820. Listed at 15 retailers as of November 4, 2026, with prices from £1,845 to £4,306, a £2,462 spread on the same certified stone. NZ Jewellers lists it at £4,306. 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

1.22
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle36.9°
OriginNatural
Grading LabIGI
CertificateIGI 790682820
Dimensions10.51 × 5.58 × 3.46 mm
L/W Ratio1.88
Girdle conditionFaceted
Top View
10.51 mm5.58 mm1.22 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 790682820
Side View
Table 55.0%Crown 36.3°Girdle: THK-VTKPavilion 36.9°Culet: NoneDepth 62.0%

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 4
Current: £2,206 GBP|Low: £1,884 GBP|High: £3,653 GBP|Avg: £2,370 GBP|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6£1,909 GBP
Retailer 5£1,967 GBP
Retailer 7£2,025 GBP
Retailer 1£2,206 GBP
Retailer 4£2,401 GBP
Retailer 2£2,514 GBP
Retailer 3£3,600 GBP

45 data points across 7 retailers

15 retailers£1,845 GBP to £4,306 GBP

B+
Cheapest Retailer
-
£1,845 GBP
B+
Retailer 2
-
£1,909 GBP
View
B+
Retailer 3
-
£1,967 GBP
View
B+
Retailer 4
-
£2,025 GBP
View
B+
Retailer 5
-
£2,060 GBP
View
Retailer 6
-
£2,060 GBP
View
Price last confirmed 8 days ago
B
Retailer 7
-
£2,139 GBP
View
B
Retailer 8
-
£2,165 GBP
View
B+
Retailer 9
-
£2,206 GBP
View
Retailer 10
-
£2,377 GBP
View
Price last confirmed 56 days ago
B
Retailer 11
-
£2,377 GBP
View
B
Retailer 12
-
£2,401 GBP
View
B
Retailer 13
-
£2,514 GBP
View
B
Retailer 14
-
£3,600 GBP
View
Most Expensive
C
NZ Jewellers
a56808f0-f9c6-45af-a76b-9f1ec858b78b · Nov 5
£4,306 GBP
$5,796 USD
View
14 more retailers have this diamond
Prices start from £1,845 GBPSave up to £2,462 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+
1.22ct Marquise
£1,845 GBP