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Oval|Natural|IGI

1.21ct J SI2 Oval Natural Diamond

VG • J/SI2 • IGI 689598790

Shape and cutting style on the report: Oval brilliant

Certificate IGI 689598790

Diamond specifications and retailer prices

From £1,171 GBP
As of November 4, 2026
Save £1,964 GBP (63%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,302 GBP at NZ Jewellers · As of September 14, 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 689598790. Listed at 17 retailers as of November 4, 2026, with a 168% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.1°
Pavilion angle42.5°
OriginNatural
Grading LabIGI
CertificateIGI 689598790
Dimensions8.81 × 5.80 × 3.76 mm
L/W Ratio1.52
Girdle conditionFaceted
Culet sizePointed
Top View
8.81 mm5.80 mm1.21 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 689598790
Side View
Table 63.0%Crown 34.1°Girdle: THN-STKPavilion 42.5°Culet: NoneDepth 64.8%

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: £3,136 GBP|Low: £1,145 GBP|High: £3,136 GBP|Avg: £1,553 GBP
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
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 13£1,171 GBP
Retailer 14£1,186 GBP
Retailer 3£1,255 GBP
Retailer 2£1,281 GBP
Retailer 12£1,286 GBP
Retailer 6£1,322 GBP
Retailer 16£1,345 GBP
Retailer 4£1,354 GBP
Retailer 9£1,387 GBP
Retailer 5£1,419 GBP
Retailer 11£1,483 GBP
Retailer 7£1,611 GBP
Retailer 10£1,632 GBP
Retailer 8£2,187 GBP
Retailer 15£2,365 GBP
NZ Jewellers£3,136 GBP

44 data points across 16 retailers

17 retailers£1,171 GBP to £3,136 GBP

B+
Cheapest Retailer
-
£1,171 GBP
A
Retailer 2
-
£1,186 GBP
View
Final sale: no returns
B+
Retailer 3
-
£1,255 GBP
View
A
Retailer 4
-
£1,281 GBP
View
B+
Retailer 5
-
£1,286 GBP
View
B+
Retailer 6
-
£1,322 GBP
View
B+
Retailer 7
-
£1,345 GBP
View
Retailer 8
-
£1,354 GBP
View
Price last confirmed 53 days ago
Retailer 9
-
£1,354 GBP
View
Price last confirmed 12 days ago
B+
Retailer 10
-
£1,387 GBP
View
B+
Retailer 11
-
£1,419 GBP
View
B+
Retailer 12
-
£1,483 GBP
View
Retailer 13
-
£1,562 GBP
View
Price last confirmed 53 days ago
B+
Retailer 14
-
£1,632 GBP
View
B
Retailer 15
-
£2,365 GBP
View
C
Retailer 16
-
£3,136 GBP
View
Most Expensive
NZ Jewellers
843fee8e-f4bc-4e32-93af-a86eeea17a1e · Sep 14
£3,302 GBP
$4,420 USD
View
Price last confirmed 52 days ago
16 more retailers have this diamond
Prices start from £1,171 GBPSave up to £1,964 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
£1,171 GBP