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Oval|Natural|IGI

1.21ct I SI2 Oval Natural Diamond

VG • I/SI2 • IGI 737595428

Shape and cutting style on the report: Oval brilliant

Certificate IGI 737595428

Diamond specifications and retailer prices

From £896 GBP
As of November 6, 2026
Save £1,507 GBP (63%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,403 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 737595428. Listed at 15 retailers as of November 5, 2026, with prices from £896 to £2,403, a £1,507 spread on the same certified stone. NZ Jewellers lists it at £2,403. 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
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.4°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 737595428
Dimensions8.02 × 5.89 × 3.88 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizePointed
Top View
8.02 mm5.89 mm1.21 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 737595428
Side View
Table 63.0%Crown 40.4°Girdle: STK-THKPavilion 40.7°Culet: NoneDepth 65.9%

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: £2,403 GBP|Low: £896 GBP|High: £2,475 GBP|Avg: £1,260 GBP|-2.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 2£896 GBP
Retailer 6£900 GBP
Retailer 7£954 GBP
Retailer 13£985 GBP
Retailer 5£1,015 GBP
Retailer 4£1,027 GBP
Retailer 11£1,030 GBP
Retailer 3£1,047 GBP
Retailer 8£1,071 GBP
Retailer 9£1,120 GBP
Retailer 12£1,374 GBP
Retailer 10£1,798 GBP
NZ Jewellers£2,403 GBP

46 data points across 13 retailers

15 retailers£896 GBP to £2,403 GBP

A
Cheapest Retailer
-
£896 GBP
Final sale: no returns
A
Retailer 2
-
£900 GBP
View
A
Retailer 3
-
£954 GBP
View
A
Retailer 4
-
£985 GBP
View
Retailer 5
-
£1,015 GBP
View
Price last confirmed 12 days ago
Retailer 6
-
£1,015 GBP
View
Price last confirmed 21 days ago
B+
Retailer 7
-
£1,027 GBP
View
A
Retailer 8
-
£1,030 GBP
View
B+
Retailer 9
-
£1,047 GBP
View
A
Retailer 10
-
£1,071 GBP
View
B+
Retailer 11
-
£1,077 GBP
View
A
Retailer 12
-
£1,120 GBP
View
A
Retailer 13
-
£1,374 GBP
View
B+
Retailer 14
-
£1,798 GBP
View
Most Expensive
B
NZ Jewellers
60187880-1303-4990-aa43-b99f2d2d3df4 · Nov 5
£2,403 GBP
$3,216 USD
View
14 more retailers have this diamond
Prices start from £896 GBPSave up to £1,507 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
£896 GBP