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Marquise|Natural|IGI

1.01ct J SI1 Marquise Natural Diamond

VG • J/SI1 • IGI 735513858

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 735513858

Diamond specifications and retailer prices

From £853 GBP
As of November 6, 2026
Save £3,289 GBP (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £5,407 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.01ct natural marquise diamond

This 1.01ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 735513858. Listed at 12 retailers as of November 5, 2026, with a 385% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.01
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 735513858
Dimensions10.20 × 5.12 × 3.28 mm
L/W Ratio1.99
Girdle conditionFaceted
Culet sizePointed
Top View
10.20 mm5.12 mm1.01 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 735513858
Side View
Table 58.0%Crown 39.7°Girdle: THN-STKPavilion 41.1°Culet: NoneDepth 64.1%

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 6
Current: £5,407 GBP|Low: £853 GBP|High: £5,407 GBP|Avg: £1,692 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 2£853 GBP
Retailer 7£1,001 GBP
Retailer 6£1,463 GBP
Retailer 4£1,482 GBP
Retailer 11£3,068 GBP
Retailer 10£3,213 GBP
Retailer 8£3,311 GBP
Retailer 9£3,395 GBP
Retailer 3£3,917 GBP
Retailer 5£4,142 GBP
MOH London£5,407 GBP

38 data points across 11 retailers

12 retailers£853 GBP to £4,142 GBP

A
Cheapest Retailer
-
£853 GBP
A
Retailer 2
-
£1,001 GBP
View
B+
Retailer 3
-
£1,188 GBP
View
B+
Retailer 4
-
£1,463 GBP
View
B+
Retailer 5
-
£1,482 GBP
View
C
Retailer 6
-
£3,068 GBP
View
C
Retailer 7
-
£3,213 GBP
View
C
Retailer 8
-
£3,311 GBP
View
C
Retailer 9
-
£3,395 GBP
View
C
Retailer 10
-
£3,917 GBP
View
C
Retailer 11
-
£4,142 GBP
View
Most Expensive
MOH London
22EB9631F · Nov 2
£5,407 GBP
View
Price under review
11 more retailers have this diamond
Prices start from £853 GBPSave up to £3,289 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
1.01ct Marquise
£853 GBP