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Marquise|Natural|IGI

1.51ct J SI1 Marquise Natural Diamond

VG • J/SI1 • IGI 642438037

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 642438037

Diamond specifications and retailer prices

From £2,784 GBP
As of November 6, 2026
Save £3,099 GBP (53%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £5,884 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 642438037. Listed at 7 retailers as of November 4, 2026, with prices from £2,784 to £5,884, a £3,099 spread on the same certified stone. MOH London lists it at £5,884. 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

1.51
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle38.6°
OriginNatural
Grading LabIGI
CertificateIGI 642438037
Dimensions11.87 × 6.14 × 3.58 mm
L/W Ratio1.93
Girdle conditionFaceted
Top View
11.87 mm6.14 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 642438037
Side View
Table 62.0%Crown 33.4°Girdle: STK-THKPavilion 38.6°Culet: NoneDepth 58.3%

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: £5,884 GBP|Low: £2,784 GBP|High: £5,971 GBP|Avg: £4,015 GBP|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2£2,784 GBP
Retailer 8£3,427 GBP
Retailer 3£3,485 GBP
Retailer 5£3,557 GBP
Retailer 4£3,704 GBP
Retailer 7£3,954 GBP
Retailer 6£4,274 GBP
MOH London£5,884 GBP

44 data points across 8 retailers

7 retailers£2,784 GBP to £5,884 GBP

A
Cheapest Retailer
-
£2,784 GBP
B+
Retailer 2
-
£3,485 GBP
View
B+
Retailer 3
-
£3,557 GBP
View
B+
Retailer 4
-
£3,704 GBP
View
B+
Retailer 5
-
£3,954 GBP
View
B+
Retailer 6
-
£4,274 GBP
View
Most Expensive
B
MOH London
3A37C3C9F · Nov 4
£5,884 GBP
View
6 more retailers have this diamond
Prices start from £2,784 GBPSave up to £3,099 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
1.51ct Marquise
£2,784 GBP