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Oval|Natural|IGI

1.21ct K SI1 Oval Natural Diamond

VG • K/SI1 • IGI 790682867

Shape and cutting style on the report: Oval brilliant

Certificate IGI 790682867

Diamond specifications and retailer prices

From £1,028 GBP
As of November 4, 2026
Save £1,677 GBP (62%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,705 GBP at NZ Jewellers · As of November 5, 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 very-good cut grade and certified by IGI 790682867. Listed at 15 retailers as of November 4, 2026, with prices from £1,028 to £2,705, a £1,677 spread on the same certified stone. NZ Jewellers lists it at £2,705. 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
FluorescenceStrong
Crown angle33.3°
Pavilion angle38.6°
OriginNatural
Grading LabIGI
CertificateIGI 790682867
Dimensions8.67 × 6.08 × 3.62 mm
L/W Ratio1.43
Girdle conditionFaceted
Top View
8.67 mm6.08 mm1.21 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateIGI 790682867
Side View
Table 57.0%Crown 33.3°Girdle: MED-STKPavilion 38.6°Culet: NoneDepth 59.5%

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 4
Current: £1,075 GBP|Low: £1,074 GBP|High: £1,966 GBP|Avg: £1,358 GBP|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 1£1,075 GBP
Retailer 6£1,160 GBP
Retailer 3£1,245 GBP
Retailer 4£1,353 GBP
Retailer 2£1,434 GBP
Retailer 5£1,937 GBP

40 data points across 6 retailers

15 retailers£1,028 GBP to £2,705 GBP

B+
Cheapest Retailer
-
£1,028 GBP
A
Retailer 2
-
£1,075 GBP
View
B+
Retailer 3
-
£1,109 GBP
View
Retailer 4
-
£1,109 GBP
View
Price last confirmed 12 days ago
B+
Retailer 5
-
£1,117 GBP
View
B+
Retailer 6
-
£1,158 GBP
View
B+
Retailer 7
-
£1,160 GBP
View
B+
Retailer 8
-
£1,177 GBP
View
B+
Retailer 9
-
£1,245 GBP
View
Retailer 10
-
£1,279 GBP
View
Price last confirmed 66 days ago
B+
Retailer 11
-
£1,279 GBP
View
B+
Retailer 12
-
£1,353 GBP
View
B+
Retailer 13
-
£1,434 GBP
View
B
Retailer 14
-
£1,937 GBP
View
Most Expensive
C
NZ Jewellers
50382b14-c377-41b9-bb05-f39bd05c7532 · Nov 5
£2,705 GBP
$3,620 USD
View
14 more retailers have this diamond
Prices start from £1,028 GBPSave up to £1,677 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
£1,028 GBP