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Round|Natural|IGI

1.21ct K VS1 Round Natural Diamond

EX • K/VS1 • IGI 830630947

Shape and cutting style on the report: Round brilliant

Certificate IGI 830630947

Diamond specifications and retailer prices

From £1,306 GBP
As of November 5, 2026
Save £2,037 GBP (61%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,343 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI 830630947. Listed at 12 retailers as of November 5, 2026, with prices from £1,306 to £3,343, a £2,037 spread on the same certified stone. NZ Jewellers lists it at £3,343. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
K
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 830630947
Dimensions6.69 × 6.75 × 4.26 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.69 mm6.75 mm1.21 ctK / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 830630947
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £3,343 GBP|Low: £1,306 GBP|High: £3,343 GBP|Avg: £1,957 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 4£1,306 GBP
Retailer 2£1,487 GBP
Retailer 6£1,599 GBP
Retailer 8£1,672 GBP
Retailer 10£1,845 GBP
Retailer 9£1,846 GBP
Retailer 5£1,951 GBP
Retailer 3£2,034 GBP
Retailer 7£2,794 GBP
NZ Jewellers£3,343 GBP

39 data points across 10 retailers

12 retailers£1,306 GBP to £3,343 GBP

A
Cheapest Retailer
-
£1,306 GBP
A
Retailer 2
-
£1,487 GBP
View
A
Retailer 3
-
£1,599 GBP
View
A
Retailer 4
-
£1,623 GBP
View
A
Retailer 5
-
£1,672 GBP
View
A
Retailer 6
-
£1,701 GBP
View
B+
Retailer 7
-
£1,845 GBP
View
B+
Retailer 8
-
£1,846 GBP
View
B+
Retailer 9
-
£1,951 GBP
View
B+
Retailer 10
-
£2,034 GBP
View
B
Retailer 11
-
£2,794 GBP
View
Most Expensive
B
NZ Jewellers
d5506a46-e10b-4442-9b36-a04de41f301c · Nov 5
£3,343 GBP
$4,499 USD
View
11 more retailers have this diamond
Prices start from £1,306 GBPSave up to £2,037 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 Round
£1,306 GBP