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Oval|Natural|GIA

1.31ct M SI1 Oval Natural Diamond

M/SI1 • GIA 6541760428

Certificate GIA 6541760428

Diamond specifications and retailer prices

From £1,542 GBP
As of November 6, 2026
Save £1,737 GBP (53%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,279 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 M colour (faint-tinted) and SI1 clarity (slightly-included) and certified by GIA 6541760428. Listed at 10 retailers as of November 5, 2026, with prices from £1,542 to £3,279, a £1,737 spread on the same certified stone. NZ Jewellers lists it at £3,279. 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
M
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6541760428
Dimensions6.06 × 8.46 × 3.88 mm
L/W Ratio1.40
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
6.06 mm8.46 mm1.31 ctM / SI1
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6541760428
Side View
Table 60.0%CrownGirdlePavilionCulet: NoneDepth 64.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,279 GBP|Low: £1,541 GBP|High: £3,279 GBP|Avg: £1,900 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2£1,542 GBP
Retailer 5£1,568 GBP
Retailer 7£1,568 GBP
Retailer 9£1,588 GBP
Retailer 8£1,641 GBP
Retailer 6£1,810 GBP
Retailer 4£1,914 GBP
Retailer 3£2,130 GBP
NZ Jewellers£3,279 GBP

40 data points across 9 retailers

10 retailers£1,542 GBP to £3,279 GBP

B+
Cheapest Retailer
-
£1,542 GBP
Retailer 2
-
£1,568 GBP
View
Price last confirmed 8 days ago
B+
Retailer 3
-
£1,568 GBP
View
B+
Retailer 4
-
£1,588 GBP
View
B
Retailer 5
-
£1,641 GBP
View
B
Retailer 6
-
£1,810 GBP
View
B
Retailer 7
-
£1,914 GBP
View
B
Retailer 8
-
£2,130 GBP
View
Retailer 9
-
£3,194 GBP
View
Price last confirmed 68 days ago
Most Expensive
C
NZ Jewellers
9cff7454-4ad8-4c96-9e26-9503169987d5 · Nov 5
£3,279 GBP
$4,389 USD
View
9 more retailers have this diamond
Prices start from £1,542 GBPSave up to £1,737 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.

B+
1.31ct Oval
£1,542 GBP