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Marquise|Natural|IGI

1.21ct K SI1 Marquise Natural Diamond

VG • K/SI1 • IGI 770656547

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 770656547

Diamond specifications and retailer prices

From £1,494 GBP
As of November 6, 2026
Save £1,727 GBP (54%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,221 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 770656547. Listed at 7 retailers as of November 5, 2026, with prices from £1,494 to £3,221, a £1,727 spread on the same certified stone. NZ Jewellers lists it at £3,221. 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
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle42.1°
Pavilion angle40.2°
OriginNatural
Grading LabIGI
CertificateIGI 770656547
Dimensions10.94 × 5.42 × 3.49 mm
L/W Ratio2.02
Girdle conditionFaceted
Culet sizePointed
Top View
10.94 mm5.42 mm1.21 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 770656547
Side View
Table 60.0%Crown 42.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 64.4%

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: £3,221 GBP|Low: £1,368 GBP|High: £3,644 GBP|Avg: £2,064 GBP|-3.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2£1,494 GBP
Retailer 5£1,541 GBP
Retailer 7£1,574 GBP
Retailer 6£1,612 GBP
Retailer 3£2,060 GBP
Retailer 4£2,692 GBP
NZ Jewellers£3,221 GBP

46 data points across 7 retailers

7 retailers£1,494 GBP to £3,221 GBP

A
Cheapest Retailer
-
£1,494 GBP
A
Retailer 2
-
£1,541 GBP
View
A
Retailer 3
-
£1,574 GBP
View
B+
Retailer 4
-
£1,612 GBP
View
B+
Retailer 5
-
£2,060 GBP
View
B
Retailer 6
-
£2,692 GBP
View
Most Expensive
C
NZ Jewellers
f718b6e1-39f2-49a3-831f-8794aaae8d97 · Nov 5
£3,221 GBP
$4,335 USD
View
6 more retailers have this diamond
Prices start from £1,494 GBPSave up to £1,727 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
£1,494 GBP