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Marquise|Natural|IGI

0.40ct I VS1 Marquise Natural Diamond

VG • I/VS1 • IGI 797618199

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 797618199

Diamond specifications and retailer prices

From £246 GBP
$330 USD
As of November 1, 2026
Save £388 GBP (61%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £634 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise sits in the sub-half-carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI 797618199. Listed at 5 retailers as of November 1, 2026, with prices from £246 to £634, a £388 spread on the same certified stone. MOH London lists it at £634. 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

0.40
Carat
I
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.3°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 797618199
Dimensions6.67 × 3.81 × 2.53 mm
L/W Ratio1.75
Girdle conditionFaceted
Culet sizePointed
Top View
6.67 mm3.81 mm0.40 ctI / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 797618199
Side View
Table 62.0%Crown 39.3°Girdle: STK-THKPavilion 41.1°Culet: NoneDepth 66.4%

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 1
Current: £634 GBP|Low: £246 GBP|High: £642 GBP|Avg: £427 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 4£246 GBP
Retailer 3£367 GBP
Retailer 5£395 GBP
Retailer 2£502 GBP
MOH London£634 GBP

29 data points across 5 retailers

5 retailers£246 GBP to £634 GBP

A
Cheapest Retailer
-
£246 GBP
$330 USD
B+
Retailer 2
-
£367 GBP
View
B+
Retailer 3
-
£395 GBP
$529 USD
View
B
Retailer 4
-
£502 GBP
€641 EUR
View
Most Expensive
B
MOH London
15C1445C5 · Nov 1
£634 GBP
View
4 more retailers have this diamond
Prices start from £246 GBPSave up to £388 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
0.40ct Marquise
£246 GBP