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Marquise|Natural|IGI

0.31ct I VS1 Marquise Natural Diamond

VG • I/VS1 • IGI 797619451

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 797619451

Diamond specifications and retailer prices

From $411 USD
£324 GBP
As of November 2, 2026
Save $175 USD (30%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $587 USD at MOH London · As of November 2, 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 I colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI 797619451. Listed at 5 retailers as of November 2, 2026, with prices from $411 to $587, a $175 spread on the same certified stone. MOH London lists it at $587. 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
I
Color
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle33.1°
Pavilion angle42.7°
OriginNatural
Grading LabIGI
CertificateIGI 797619451
Dimensions6.73 × 3.50 × 2.33 mm
L/W Ratio1.92
Girdle conditionFaceted
Culet sizeNone
Top View
6.73 mm3.50 mm0.31 ctI / VS1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 797619451
Side View
Table 58.0%Crown 33.1°Girdle: STK-THKPavilion 42.7°Culet: NoneDepth 66.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $587 USD|Low: $280 USD|High: $594 USD|Avg: $436 USD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 5$280 USD
Retailer 2$411 USD
Retailer 4$429 USD
Retailer 3$498 USD
MOH London$587 USD

29 data points across 5 retailers

5 retailers$411 USD to $587 USD

Retailer 1
-
$280 USD
Price last confirmed 39 days ago
B+
Retailer 2
-
$411 USD
£324 GBP
View
B+
Retailer 3
-
$429 USD
View
B
Retailer 4
-
$498 USD
€474 EUR
View
Most Expensive
B
MOH London
3F91CD38A · Nov 2
$587 USD
£462 GBP
View
4 more retailers have this diamond
Prices start from $411 USDSave up to $175 USD

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.

B+
0.31ct Marquise
$411 USD