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Marquise|Natural|IGI

0.31ct D SI1 Marquise Natural Diamond

VG • D/SI1 • IGI 841682303

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 841682303

Diamond specifications and retailer prices

From £257 GBP
$345 USD
As of October 29, 2026
Save £341 GBP (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £598 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.31ct natural marquise diamond

This 0.31ct natural marquise sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 841682303. Listed at 13 retailers as of October 29, 2026, with prices from £257 to £598, a £341 spread on the same certified stone. MOH London lists it at £598. 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

0.31
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle31.1°
Pavilion angle42.3°
OriginNatural
Grading LabIGI
CertificateIGI 841682303
Dimensions7.07 × 3.43 × 2.33 mm
L/W Ratio2.06
Girdle conditionFaceted
Top View
7.07 mm3.43 mm0.31 ctD / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI 841682303
Side View
Table 54.0%Crown 31.1°Girdle: STK-VTKPavilion 42.3°Culet: NoneDepth 67.9%

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: Oct 29
Current: £598 GBP|Low: £257 GBP|High: £1,012 GBP|Avg: £440 GBP|+4.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 5£257 GBP
Retailer 4£278 GBP
Retailer 3£287 GBP
Retailer 6£346 GBP
Retailer 7£347 GBP
Retailer 13£353 GBP
Retailer 12£355 GBP
Retailer 9£381 GBP
Retailer 11£400 GBP
Retailer 8£477 GBP
Retailer 2£522 GBP
MOH London£598 GBP
Retailer 10£988 GBP

16 data points across 13 retailers

13 retailers£257 GBP to £598 GBP

A
Cheapest Retailer
-
£257 GBP
$345 USD
B+
Retailer 2
-
£278 GBP
$372 USD
View
B+
Retailer 3
-
£287 GBP
$385 USD
View
B
Retailer 4
-
£346 GBP
View
B
Retailer 5
-
£347 GBP
$465 USD
View
B
Retailer 6
-
£353 GBP
View
B
Retailer 7
-
£355 GBP
$476 USD
View
B
Retailer 8
-
£381 GBP
$510 USD
View
B
Retailer 9
-
£400 GBP
ZAR 8,652 ZAR
View
B
Retailer 10
-
£477 GBP
€609 EUR
View
B
Retailer 11
-
£522 GBP
View
Most Expensive
C
MOH London
C918FCD05 · Oct 29
£598 GBP
View
11 more retailers have this diamond
Prices start from £257 GBPSave up to £341 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
0.31ct Marquise
£257 GBP