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Marquise|Natural|IGI

1.51ct H SI2 Marquise Natural Diamond

EX • H/SI2 • IGI 830653416

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 830653416

Diamond specifications and retailer prices

From $3,000 USD
As of November 5, 2026
Save $2,858 USD (49%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $5,858 USD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 830653416. Listed at 7 retailers as of November 5, 2026, with prices from $3,000 to $5,858, a $2,858 spread on the same certified stone. Wholesale Diamonds Direct lists it at $5,858. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40°
OriginNatural
Grading LabIGI
CertificateIGI 830653416
Dimensions11.45 × 6.05 × 3.82 mm
L/W Ratio1.89
Girdle conditionFaceted
Top View
11.45 mm6.05 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 830653416
Side View
Table 57.0%Crown 35.7°Girdle: MED-STKPavilion 40°Culet: NoneDepth 63.1%

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 5
Current: $3,398 USD|Low: $2,996 USD|High: $6,219 USD|Avg: $4,272 USD|-6.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Wholesale Diamonds Direct
November 6, 2026
Retailer 3$3,000 USD
Retailer 5$3,269 USD
Retailer 1$3,398 USD
Retailer 6$3,640 USD
Retailer 4$4,118 USD
Retailer 2$4,228 USD
Wholesale Diamonds Direct$5,858 USD

10 data points across 7 retailers

7 retailers$3,000 USD to $5,858 USD

A
Cheapest Retailer
-
$3,000 USD
A
Retailer 2
-
$3,269 USD
View
A
Retailer 3
-
$3,398 USD
View
A
Retailer 4
-
$3,640 USD
View
A
Retailer 5
-
$4,118 USD
View
A
Retailer 6
-
$4,228 USD
View
Most Expensive
A
Wholesale Diamonds Direct
600305924 · Nov 6
$5,858 USD
View
6 more retailers have this diamond
Prices start from $3,000 USDSave up to $2,858 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
$3,000 USD