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Oval|Natural|IGI

1.51ct L SI1 Oval Natural Diamond

VG • L/SI1 • IGI 605313265

Shape and cutting style on the report: Oval brilliant

Certificate IGI 605313265

Diamond specifications and retailer prices

From £1,618 GBP
As of November 6, 2026
Save £1,127 GBP (41%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,704 GBP at NZ Jewellers · As of September 28, 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 605313265. Listed at 11 retailers as of November 5, 2026, with a 70% 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

1.51
Carat
L
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle39.7°
OriginNatural
Grading LabIGI
CertificateIGI 605313265
Dimensions8.92 × 6.30 × 4.06 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
Top View
8.92 mm6.30 mm1.51 ctL / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 605313265
Side View
Table 57.0%Crown 40.1°Girdle: STK-THKPavilion 39.7°Culet: NoneDepth 64.4%

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: £1,618 GBP|Low: £1,618 GBP|High: £2,765 GBP|Avg: £2,195 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 1£1,618 GBP
Retailer 6£2,015 GBP
Retailer 5£2,041 GBP
Retailer 2£2,212 GBP
Retailer 4£2,510 GBP
Retailer 3£2,746 GBP

40 data points across 6 retailers

11 retailers£1,618 GBP to £2,746 GBP

A
Cheapest Retailer
-
£1,618 GBP
B+
Retailer 2
-
£2,015 GBP
View
B+
Retailer 3
-
£2,041 GBP
View
B
Retailer 4
-
£2,193 GBP
View
B+
Retailer 5
-
£2,212 GBP
View
Retailer 6
-
£2,250 GBP
View
Price last confirmed 42 days ago
B
Retailer 7
-
£2,356 GBP
View
B
Retailer 8
-
£2,510 GBP
View
Retailer 9
-
£2,596 GBP
View
Price last confirmed 45 days ago
B
Retailer 10
-
£2,746 GBP
View
Most Expensive
NZ Jewellers
8b94e127-8211-412d-bd02-381e5749ca61 · Sep 28
£4,704 GBP
$6,296 USD
View
Price last confirmed 39 days ago
10 more retailers have this diamond
Prices start from £1,618 GBPSave up to £1,127 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
£1,618 GBP