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Oval|Natural|IGI

1.51ct I VS1 Oval Natural Diamond

VG • I/VS1 • IGI 801639230

Shape and cutting style on the report: Oval brilliant

Certificate IGI 801639230

Diamond specifications and retailer prices

From £2,788 GBP
$3,735 USD
As of November 1, 2026
Save £2,899 GBP (51%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £5,687 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI 801639230. Listed at 17 retailers as of October 30, 2026, with prices from £2,788 to £5,687, a £2,899 spread on the same certified stone. NZ Jewellers lists it at £5,687. 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

1.51
Carat
I
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.1°
Pavilion angle39.1°
OriginNatural
Grading LabIGI
CertificateIGI 801639230
Dimensions8.53 × 6.33 × 4.07 mm
L/W Ratio1.35
Girdle conditionFaceted
Top View
8.53 mm6.33 mm1.51 ctI / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 801639230
Side View
Table 65.0%Crown 41.1°Girdle: STK-THKPavilion 39.1°Culet: NoneDepth 64.3%

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 1
Current: £5,687 GBP|Low: £2,761 GBP|High: £5,889 GBP|Avg: £3,696 GBP|-3.4%
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
Retailer 17
November 1, 2026
Retailer 4£2,788 GBP
Retailer 6£2,873 GBP
Retailer 15£2,918 GBP
Retailer 5£3,013 GBP
Retailer 2£3,033 GBP
Retailer 7£3,094 GBP
Retailer 3£3,264 GBP
Retailer 14£3,264 GBP
Retailer 17£3,264 GBP
Retailer 8£3,375 GBP
Retailer 10£3,402 GBP
Retailer 12£3,695 GBP
Retailer 16£3,767 GBP
Retailer 9£3,788 GBP
Retailer 11£4,013 GBP
Retailer 13£5,227 GBP
NZ Jewellers£5,687 GBP

36 data points across 17 retailers

17 retailers£2,788 GBP to £5,687 GBP

A
Cheapest Retailer
-
£2,788 GBP
$3,735 USD
A
Retailer 2
-
£2,873 GBP
$3,849 USD
View
A
Retailer 3
-
£2,918 GBP
$3,910 USD
View
A
Retailer 4
-
£3,013 GBP
$4,037 USD
View
Final sale: no returns
A
Retailer 5
-
£3,033 GBP
View
A
Retailer 6
-
£3,094 GBP
$4,145 USD
View
A
Retailer 7
-
£3,264 GBP
$4,374 USD
View
A
Retailer 8
-
£3,264 GBP
$4,374 USD
View
A
Retailer 9
-
£3,264 GBP
$4,374 USD
View
A
Retailer 10
-
£3,375 GBP
$4,523 USD
View
A
Retailer 11
-
£3,402 GBP
View
A
Retailer 12
-
£3,695 GBP
€4,715 EUR
View
A
Retailer 13
-
£3,767 GBP
$5,047 USD
View
A
Retailer 14
-
£3,788 GBP
View
A
Retailer 15
-
£4,013 GBP
ZAR 86,856 ZAR
View
B+
Retailer 16
-
£5,227 GBP
View
Most Expensive
B+
NZ Jewellers
5d491467-f87d-4aa0-9053-bdac64dfc9f0 · Oct 30
£5,687 GBP
$7,620 USD
View
16 more retailers have this diamond
Prices start from £2,788 GBPSave up to £2,899 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
1.51ct Oval
£2,788 GBP