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Marquise|Natural|IGI

3.51ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 828653006

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 828653006

Diamond specifications and retailer prices

From €28,293 EUR
₹3,010,439 INR
As of November 2, 2026
Save €19,342 EUR (41%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €47,635 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 3.51ct natural marquise diamond

This 3.51ct natural marquise sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 828653006. Listed at 19 retailers as of November 1, 2026, with prices from €28,293 to €47,635, a €19,342 spread on the same certified stone. MOH London lists it at €47,635. 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

3.51
Carat
I
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.2°
OriginNatural
Grading LabIGI
CertificateIGI 828653006
Dimensions15.32 × 7.94 × 4.94 mm
L/W Ratio1.93
Girdle conditionFaceted
Culet sizeNone
Top View
15.32 mm7.94 mm3.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 828653006
Side View
Table 59.0%Crown 33.2°Girdle: ThickPavilion 40.2°Culet: NoneDepth 62.2%

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: Nov 2
Current: €47,635 EUR|Low: €28,236 EUR|High: €51,419 EUR|Avg: €35,456 EUR|-4.6%
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
Retailer 14
Retailer 15
November 2, 2026
Retailer 2€28,293 EUR
Retailer 3€30,652 EUR
Retailer 15€30,861 EUR
Retailer 10€31,202 EUR
Retailer 6€31,772 EUR
Retailer 13€32,666 EUR
Retailer 8€33,882 EUR
Retailer 4€36,147 EUR
Retailer 12€36,473 EUR
Retailer 9€36,997 EUR
Retailer 11€37,485 EUR
Retailer 5€37,654 EUR
Retailer 7€37,876 EUR
Retailer 14€39,540 EUR
MOH London€47,635 EUR

20 data points across 15 retailers

19 retailers€28,293 EUR to €47,635 EUR

A
Cheapest Retailer
-
€28,293 EUR
₹3,010,439 INR
B+
Retailer 2
-
€30,652 EUR
$34,245 USD
View
A
Retailer 3
-
€30,861 EUR
$34,478 USD
View
Final sale: no returns
B+
Retailer 4
-
€31,202 EUR
£27,448 GBP
View
B+
Retailer 5
-
€31,772 EUR
$35,496 USD
View
B+
Retailer 6
-
€32,666 EUR
$36,495 USD
View
B+
Retailer 7
-
€33,882 EUR
£29,805 GBP
View
Retailer 8
-
€34,113 EUR
$38,111 USD
View
Price last confirmed 38 days ago
B+
Retailer 9
-
€36,147 EUR
$40,384 USD
View
Retailer 10
-
€36,177 EUR
$40,417 USD
View
Price last confirmed 12 days ago
B+
Retailer 11
-
€36,473 EUR
$40,748 USD
View
B+
Retailer 12
-
€36,997 EUR
View
B+
Retailer 13
-
€37,485 EUR
$41,878 USD
View
B
Retailer 14
-
€37,654 EUR
$42,067 USD
View
B+
Retailer 15
-
€37,876 EUR
$42,315 USD
View
Retailer 16
-
€39,160 EUR
$43,750 USD
View
Price last confirmed 41 days ago
B+
Retailer 17
-
€39,540 EUR
ZAR 713,642 ZAR
View
Retailer 18
-
€40,667 EUR
$45,433 USD
View
Price last confirmed 39 days ago
Most Expensive
B
MOH London
CBBE91689 · Nov 1
€47,635 EUR
£41,904 GBP
View
18 more retailers have this diamond
Prices start from €28,293 EURSave up to €19,342 EUR

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
3.51ct Marquise
€28,293 EUR