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Oval|Natural|IGI

1.31ct K SI1 Oval Natural Diamond

VG • K/SI1 • IGI 628465278

Shape and cutting style on the report: Oval brilliant

Certificate IGI 628465278

Diamond specifications and retailer prices

From £1,334 GBP
As of November 6, 2026
Save £1,918 GBP (59%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,253 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.31ct natural oval diamond

This 1.31ct natural oval sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 628465278. Listed at 12 retailers as of November 4, 2026, with prices from £1,334 to £3,253, a £1,918 spread on the same certified stone. MOH London lists it at £3,253. 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

1.31
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.4°
Pavilion angle41.7°
OriginNatural
Grading LabIGI
CertificateIGI 628465278
Dimensions8.46 × 6.03 × 3.90 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizePointed
Top View
8.46 mm6.03 mm1.31 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 628465278
Side View
Table 62.0%Crown 40.4°Girdle: MED-THKPavilion 41.7°Culet: NoneDepth 64.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,253 GBP|Low: £1,334 GBP|High: £3,301 GBP|Avg: £2,065 GBP|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2£1,334 GBP
Retailer 7£1,681 GBP
Retailer 8£1,737 GBP
Retailer 3£1,806 GBP
Retailer 4£2,004 GBP
Retailer 6£2,096 GBP
Retailer 5£2,272 GBP
MOH London£3,253 GBP

27 data points across 8 retailers

12 retailers£1,334 GBP to £3,253 GBP

A
Cheapest Retailer
-
£1,334 GBP
B+
Retailer 2
-
£1,681 GBP
View
B+
Retailer 3
-
£1,681 GBP
View
B+
Retailer 4
-
£1,737 GBP
View
B+
Retailer 5
-
£1,806 GBP
View
Retailer 6
-
£1,862 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£1,966 GBP
View
B+
Retailer 8
-
£2,004 GBP
View
B+
Retailer 9
-
£2,096 GBP
View
B+
Retailer 10
-
£2,148 GBP
View
B+
Retailer 11
-
£2,272 GBP
View
Most Expensive
B
MOH London
E97CBE54D · Nov 4
£3,253 GBP
View
11 more retailers have this diamond
Prices start from £1,334 GBPSave up to £1,918 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
1.31ct Oval
£1,334 GBP