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Marquise|Natural|IGI

1.51ct I VS1 Marquise Natural Diamond

VG • I/VS1 • IGI 831664694

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 831664694

Diamond specifications and retailer prices

From $6,327 USD
As of November 6, 2026
Save $3,176 USD (33%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $9,503 USD 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 I colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI 831664694. Listed at 3 retailers as of November 4, 2026, with prices from $6,327 to $9,503, a $3,176 spread on the same certified stone. MOH London lists it at $9,503. 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
I
Color
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle32.9°
Pavilion angle37.2°
OriginNatural
Grading LabIGI
CertificateIGI 831664694
Dimensions12.09 × 5.87 × 3.41 mm
L/W Ratio2.06
Girdle conditionFaceted
Culet sizeNone
Top View
12.09 mm5.87 mm1.51 ctI / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 831664694
Side View
Table 62.0%Crown 32.9°Girdle: STK-THKPavilion 37.2°Culet: NoneDepth 58.1%

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: $9,503 USD|Low: $6,326 USD|High: $10,102 USD|Avg: $7,892 USD|-5.8%
MOH London
Retailer 2
Retailer 3
November 6, 2026
Retailer 2$6,327 USD
Retailer 3$7,038 USD
MOH London$9,503 USD

42 data points across 3 retailers

3 retailers$6,327 USD to $9,503 USD

A
Cheapest Retailer
-
$6,327 USD
A
Retailer 2
-
$7,038 USD
View
Most Expensive
B+
MOH London
6CE9F2F65 · Nov 4
$9,503 USD
£7,483 GBP
View
2 more retailers have this diamond
Prices start from $6,327 USDSave up to $3,176 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.

A
1.51ct Marquise
$6,327 USD