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Oval|Natural|IGI

1.21ct K SI2 Oval Natural Diamond

GD • K/SI2 • IGI 508118603

Shape and cutting style on the report: Oval brilliant

Certificate IGI 508118603

Diamond specifications and retailer prices

From £1,124 GBP
As of November 6, 2026
Save £2,155 GBP (66%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,278 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 SI2 clarity (slightly-included), with a standard cut grade and certified by IGI 508118603. Listed at 11 retailers as of November 5, 2026, with prices from £1,124 to £3,278, a £2,155 spread on the same certified stone. NZ Jewellers lists it at £3,278. 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
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle43.4°
Pavilion angle38.2°
OriginNatural
Grading LabIGI
CertificateIGI 508118603
Dimensions7.89 × 5.98 × 3.76 mm
L/W Ratio1.32
Girdle conditionFaceted
Culet sizePointed
Top View
7.89 mm5.98 mm1.21 ctK / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateIGI 508118603
Side View
Table 58.0%Crown 43.4°Girdle: MED-STKPavilion 38.2°Culet: NoneDepth 62.9%

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 6
Current: £3,278 GBP|Low: £1,124 GBP|High: £3,278 GBP|Avg: £1,872 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 2£1,124 GBP
Retailer 8£1,417 GBP
Retailer 7£1,431 GBP
Retailer 5£1,442 GBP
Retailer 9£1,568 GBP
Retailer 6£1,641 GBP
Retailer 10£1,810 GBP
Retailer 3£2,130 GBP
Retailer 4£2,740 GBP
NZ Jewellers£3,278 GBP

41 data points across 10 retailers

11 retailers£1,124 GBP to £3,278 GBP

B+
Cheapest Retailer
-
£1,124 GBP
B+
Retailer 2
-
£1,431 GBP
View
B+
Retailer 3
-
£1,442 GBP
View
Retailer 4
-
£1,568 GBP
View
Price last confirmed 8 days ago
B
Retailer 5
-
£1,568 GBP
View
B
Retailer 6
-
£1,641 GBP
View
B
Retailer 7
-
£1,671 GBP
View
B
Retailer 8
-
£1,810 GBP
View
B
Retailer 9
-
£2,130 GBP
View
C
Retailer 10
-
£2,740 GBP
View
Most Expensive
C
NZ Jewellers
b324f108-aa85-437c-be58-3bc65136f93e · Nov 5
£3,278 GBP
$4,388 USD
View
10 more retailers have this diamond
Prices start from £1,124 GBPSave up to £2,155 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+
1.21ct Oval
£1,124 GBP