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Marquise|Natural|IGI

2.51ct I SI2 Marquise Natural Diamond

VG • I/SI2 • IGI 747550630

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 747550630

Diamond specifications and retailer prices

From $15,970 USD
As of October 30, 2026
Save $8,608 USD (35%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $24,578 USD at MOH London · As of November 1, 2026
View at MOH London

About this 2.51ct natural marquise diamond

This 2.51ct natural marquise sits in the two to three carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 747550630. Listed at 11 retailers as of October 30, 2026, with prices from $15,970 to $24,578, a $8,608 spread on the same certified stone. MOH London lists it at $24,578. 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

2.51
Carat
I
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 747550630
Dimensions12.88 × 6.98 × 4.68 mm
L/W Ratio1.85
Girdle conditionFaceted
Culet sizePointed
Top View
12.88 mm6.98 mm2.51 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 747550630
Side View
Table 57.0%Crown 39°Girdle: STK-THKPavilion 41.1°Culet: NoneDepth 67.0%

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 30
Current: $24,578 USD|Low: $15,639 USD|High: $25,210 USD|Avg: $19,024 USD|+1.0%
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 1, 2026
Retailer 4$15,639 USD
Retailer 12$15,970 USD
Retailer 13$16,647 USD
Retailer 9$16,808 USD
Retailer 11$17,371 USD
Retailer 2$18,357 USD
Retailer 8$18,529 USD
Retailer 7$18,819 USD
Retailer 6$19,095 USD
Retailer 3$19,543 USD
Retailer 5$20,886 USD
Retailer 10$22,295 USD
MOH London$24,578 USD

35 data points across 13 retailers

11 retailers$15,970 USD to $24,578 USD

A
Cheapest Retailer
-
$15,970 USD
A
Retailer 2
-
$16,647 USD
View
Final sale: no returns
A
Retailer 3
-
$16,808 USD
View
B+
Retailer 4
-
$17,371 USD
View
A
Retailer 5
-
$18,357 USD
£14,455 GBP
View
B+
Retailer 6
-
$18,529 USD
View
B+
Retailer 7
-
$18,819 USD
View
A
Retailer 8
-
$19,095 USD
€18,186 EUR
View
B+
Retailer 9
-
$19,543 USD
View
B+
Retailer 10
-
$22,295 USD
View
Most Expensive
B+
MOH London
BC8D35EA9 · Nov 1
$24,578 USD
£19,353 GBP
View
10 more retailers have this diamond
Prices start from $15,970 USDSave up to $8,608 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
2.51ct Marquise
$15,970 USD