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Marquise|Natural|IGI

1.31ct M SI2 Marquise Natural Diamond

VG • M/SI2 • IGI 674522736

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 674522736

Diamond specifications and retailer prices

From £1,205 GBP
As of November 4, 2026
Save £2,019 GBP (63%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,225 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.31ct natural marquise diamond

This 1.31ct natural marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 674522736. Listed at 11 retailers as of November 4, 2026, with prices from £1,205 to £3,225, a £2,019 spread on the same certified stone. NZ Jewellers lists it at £3,225. 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
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle40.5°
Pavilion angle39°
OriginNatural
Grading LabIGI
CertificateIGI 674522736
Dimensions10.19 × 5.57 × 3.72 mm
L/W Ratio1.83
Girdle conditionFaceted
Culet sizePointed
Top View
10.19 mm5.57 mm1.31 ctM / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateIGI 674522736
Side View
Table 61.0%Crown 40.5°Girdle: STK-THKPavilion 39°Culet: NoneDepth 66.8%

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 4
Current: £1,795 GBP|Low: £847 GBP|High: £1,805 GBP|Avg: £1,374 GBP|+10.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8£847 GBP
Retailer 3£1,205 GBP
Retailer 2£1,298 GBP
Retailer 4£1,337 GBP
Retailer 6£1,424 GBP
Retailer 5£1,525 GBP
Retailer 7£1,573 GBP
Retailer 1£1,795 GBP

18 data points across 8 retailers

11 retailers£1,205 GBP to £3,225 GBP

B+
Cheapest Retailer
-
£1,205 GBP
B+
Retailer 2
-
£1,298 GBP
View
B+
Retailer 3
-
£1,322 GBP
View
Retailer 4
-
£1,322 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£1,337 GBP
View
B+
Retailer 6
-
£1,383 GBP
View
B+
Retailer 7
-
£1,424 GBP
View
Retailer 8
-
£1,525 GBP
View
Price last confirmed 61 days ago
B
Retailer 9
-
£1,525 GBP
View
B
Retailer 10
-
£1,795 GBP
View
Most Expensive
C
NZ Jewellers
8cafda69-97c0-4e45-9294-49338b1066dc · Nov 5
£3,225 GBP
$4,340 USD
View
10 more retailers have this diamond
Prices start from £1,205 GBPSave up to £2,019 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 Marquise
£1,205 GBP