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Oval|Natural|IGI

1.21ct K SI1 Oval Natural Diamond

EX • K/SI1 • IGI 762534812

Shape and cutting style on the report: Oval brilliant

Certificate IGI 762534812

Diamond specifications and retailer prices

From £827 GBP
As of November 6, 2026
Save £781 GBP (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,211 GBP at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.21ct natural oval diamond

This 1.21ct natural oval sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 762534812. Listed at 14 retailers as of November 4, 2026, with a 94% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.21
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 762534812
Dimensions9.17 × 5.75 × 3.60 mm
L/W Ratio1.59
Girdle conditionFaceted
Culet sizePointed
Top View
9.17 mm5.75 mm1.21 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 762534812
Side View
Table 61.0%Crown 34.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £827 GBP|Low: £827 GBP|High: £1,680 GBP|Avg: £1,109 GBP|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 1£827 GBP
Retailer 7£844 GBP
Retailer 2£907 GBP
Retailer 9£914 GBP
Retailer 8£954 GBP
Retailer 3£963 GBP
Retailer 4£991 GBP
Retailer 5£1,074 GBP
Retailer 10£1,231 GBP
Retailer 6£1,608 GBP

44 data points across 10 retailers

14 retailers£827 GBP to £1,608 GBP

A
Cheapest Retailer
-
£827 GBP
A
Retailer 2
-
£844 GBP
View
Retailer 3
-
£907 GBP
View
Price last confirmed 36 days ago
Retailer 4
-
£907 GBP
View
Price last confirmed 21 days ago
A
Retailer 5
-
£914 GBP
View
Retailer 6
-
£941 GBP
View
Price last confirmed 38 days ago
A
Retailer 7
-
£954 GBP
View
A
Retailer 8
-
£963 GBP
View
A
Retailer 9
-
£991 GBP
View
Retailer 10
-
£1,046 GBP
View
Price last confirmed 38 days ago
A
Retailer 11
-
£1,074 GBP
View
A
Retailer 12
-
£1,231 GBP
View
B+
Retailer 13
-
£1,608 GBP
View
Most Expensive
NZ Jewellers
bfccbb32-3a67-49db-afa6-372b1bd30458 · Sep 30
£2,211 GBP
$2,960 USD
View
Price last confirmed 37 days ago
13 more retailers have this diamond
Prices start from £827 GBPSave up to £781 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 Oval
£827 GBP