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Oval|Natural|IGI

1.51ct I SI1 Oval Natural Diamond

VG • I/SI1 • IGI 794652789

Shape and cutting style on the report: Oval brilliant

Certificate IGI 794652789

Diamond specifications and retailer prices

From £2,331 GBP
₹297,864 INR
As of October 31, 2026
Save £3,016 GBP (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £5,347 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 794652789. Listed at 18 retailers as of October 30, 2026, with prices from £2,331 to £5,347, a £3,016 spread on the same certified stone. NZ Jewellers lists it at £5,347. 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41°
Pavilion angle39.7°
OriginNatural
Grading LabIGI
CertificateIGI 794652789
Dimensions9.86 × 6.09 × 3.89 mm
L/W Ratio1.62
Girdle conditionFaceted
Culet sizePointed
Top View
9.86 mm6.09 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 794652789
Side View
Table 60.0%Crown 41°Girdle: STK-THKPavilion 39.7°Culet: NoneDepth 63.9%

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: Oct 31
Current: £3,271 GBP|Low: £2,325 GBP|High: £5,187 GBP|Avg: £3,245 GBP|+0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 5£2,331 GBP
Retailer 8£2,833 GBP
Retailer 2£2,912 GBP
Retailer 3£3,198 GBP
Retailer 7£3,223 GBP
Retailer 1£3,271 GBP
Retailer 4£3,772 GBP
Retailer 6£5,160 GBP

29 data points across 8 retailers

18 retailers£2,331 GBP to £5,347 GBP

A
Cheapest Retailer
-
£2,331 GBP
₹297,864 INR
B+
Retailer 2
-
£2,701 GBP
$3,624 USD
View
B+
Retailer 3
-
£2,833 GBP
$3,802 USD
View
Final sale: no returns
A
Retailer 4
-
£2,912 GBP
View
B+
Retailer 5
-
£2,921 GBP
$3,920 USD
View
B+
Retailer 6
-
£3,043 GBP
$4,083 USD
View
B+
Retailer 7
-
£3,069 GBP
$4,118 USD
View
B+
Retailer 8
-
£3,069 GBP
$4,118 USD
View
Retailer 9
-
£3,069 GBP
$4,118 USD
View
Price last confirmed 17 days ago
B+
Retailer 10
-
£3,179 GBP
$4,266 USD
View
B+
Retailer 11
-
£3,198 GBP
View
B+
Retailer 12
-
£3,223 GBP
$4,325 USD
View
B+
Retailer 13
-
£3,271 GBP
€4,180 EUR
View
B+
Retailer 14
-
£3,376 GBP
$4,530 USD
View
B+
Retailer 15
-
£3,541 GBP
$4,752 USD
View
B+
Retailer 16
-
£3,772 GBP
ZAR 81,781 ZAR
View
B
Retailer 17
-
£5,160 GBP
View
Most Expensive
B
NZ Jewellers
67829593-4506-4b6e-8a10-140fd6fc2704 · Oct 30
£5,347 GBP
$7,175 USD
View
17 more retailers have this diamond
Prices start from £2,331 GBPSave up to £3,016 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
£2,331 GBP