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Marquise|Natural|IGI

0.91ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 815639079

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 815639079

Diamond specifications and retailer prices

From £1,161 GBP
$1,558 USD
As of November 2, 2026
Save £1,704 GBP (59%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,865 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.91ct natural marquise diamond

This 0.91ct natural marquise sits in the just-under-one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 815639079. Listed at 9 retailers as of October 30, 2026, with prices from £1,161 to £2,865, a £1,704 spread on the same certified stone. NZ Jewellers lists it at £2,865. 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

0.91
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle38.7°
OriginNatural
Grading LabIGI
CertificateIGI 815639079
Dimensions10.19 × 4.86 × 3.02 mm
L/W Ratio2.10
Girdle conditionFaceted
Top View
10.19 mm4.86 mm0.91 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 815639079
Side View
Table 62.0%Crown 36.6°Girdle: STK-THKPavilion 38.7°Culet: NoneDepth 62.1%

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 2
Current: £2,865 GBP|Low: £1,161 GBP|High: £2,928 GBP|Avg: £1,655 GBP|-2.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8£1,161 GBP
Retailer 7£1,174 GBP
Retailer 6£1,229 GBP
Retailer 9£1,283 GBP
Retailer 5£1,285 GBP
Retailer 2£1,560 GBP
Retailer 4£2,069 GBP
Retailer 3£2,267 GBP
NZ Jewellers£2,865 GBP

36 data points across 9 retailers

9 retailers£1,161 GBP to £2,865 GBP

A
Cheapest Retailer
-
£1,161 GBP
$1,558 USD
A
Retailer 2
-
£1,174 GBP
$1,576 USD
View
A
Retailer 3
-
£1,229 GBP
$1,649 USD
View
B+
Retailer 4
-
£1,283 GBP
$1,722 USD
View
B+
Retailer 5
-
£1,285 GBP
$1,725 USD
View
B+
Retailer 6
-
£1,560 GBP
€1,994 EUR
View
B
Retailer 7
-
£2,069 GBP
View
B
Retailer 8
-
£2,267 GBP
View
Most Expensive
C
NZ Jewellers
7d0b2ad4-02c3-44da-a43d-a356d0377b47 · Oct 30
£2,865 GBP
$3,845 USD
View
8 more retailers have this diamond
Prices start from £1,161 GBPSave up to £1,704 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
0.91ct Marquise
£1,161 GBP