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Oval|Natural|IGI

1.51ct M SI1 Oval Natural Diamond

VG • M/SI1 • IGI 626408265

Shape and cutting style on the report: Oval brilliant

Certificate IGI 626408265

Diamond specifications and retailer prices

From £1,171 GBP
As of November 6, 2026
Save £2,025 GBP (63%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,197 GBP at NZ Jewellers · As of November 5, 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 626408265. Listed at 13 retailers as of November 5, 2026, with prices from £1,171 to £3,197, a £2,025 spread on the same certified stone. NZ Jewellers lists it at £3,197. 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
M
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle39.5°
Pavilion angle39.2°
OriginNatural
Grading LabIGI
CertificateIGI 626408265
Dimensions8.76 × 6.39 × 4.00 mm
L/W Ratio1.37
Girdle conditionFaceted
Culet sizePointed
Top View
8.76 mm6.39 mm1.51 ctM / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 626408265
Side View
Table 59.0%Crown 39.5°Girdle: STK-THKPavilion 39.2°Culet: NoneDepth 62.6%

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: £3,197 GBP|Low: £1,171 GBP|High: £3,197 GBP|Avg: £1,567 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
November 6, 2026
Retailer 2£1,171 GBP
Retailer 3£1,194 GBP
Retailer 5£1,306 GBP
Retailer 8£1,310 GBP
Retailer 10£1,310 GBP
Retailer 12£1,360 GBP
Retailer 9£1,371 GBP
Retailer 4£1,490 GBP
Retailer 11£1,512 GBP
Retailer 7£1,600 GBP
Retailer 6£1,779 GBP
NZ Jewellers£3,197 GBP

46 data points across 12 retailers

13 retailers£1,171 GBP to £3,197 GBP

A
Cheapest Retailer
-
£1,171 GBP
B+
Retailer 2
-
£1,194 GBP
View
B+
Retailer 3
-
£1,306 GBP
View
Retailer 4
-
£1,310 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£1,310 GBP
View
B+
Retailer 6
-
£1,360 GBP
View
B+
Retailer 7
-
£1,371 GBP
View
B+
Retailer 8
-
£1,413 GBP
View
B+
Retailer 9
-
£1,490 GBP
View
B+
Retailer 10
-
£1,512 GBP
View
B+
Retailer 11
-
£1,600 GBP
View
B+
Retailer 12
-
£1,779 GBP
View
Most Expensive
C
NZ Jewellers
94181ae3-7ee0-4767-abbf-1d44d1400764 · Nov 5
£3,197 GBP
$4,279 USD
View
12 more retailers have this diamond
Prices start from £1,171 GBPSave up to £2,025 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
£1,171 GBP