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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 $44,179 CAD
₹3,012,065 INR
As of October 31, 2026
Save $36,067 CAD (45%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $80,246 CAD at MOH London · As of October 29, 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 October 29, 2026, with prices from $44,179 to $80,246, a $36,067 spread on the same certified stone. MOH London lists it at $80,246. 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: Oct 31
Current: $80,246 CAD|Low: $44,066 CAD|High: $80,246 CAD|Avg: $55,495 CAD|+3.0%
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
Retailer 14
Retailer 15
November 1, 2026
Retailer 12$44,179 CAD
Retailer 13$47,837 CAD
Retailer 11$48,162 CAD
Retailer 9$48,290 CAD
Retailer 6$49,584 CAD
Retailer 8$50,980 CAD
Retailer 4$56,412 CAD
Retailer 2$56,921 CAD
Retailer 3$56,946 CAD
Retailer 14$57,756 CAD
Retailer 5$58,763 CAD
Retailer 7$59,110 CAD
Retailer 10$61,707 CAD
Retailer 15$62,816 CAD
MOH London$80,246 CAD

21 data points across 15 retailers

19 retailers$44,179 CAD to $80,246 CAD

A
Cheapest Retailer
-
$44,179 CAD
₹3,012,065 INR
A
Retailer 2
-
$47,837 CAD
$34,245 USD
View
A
Retailer 3
-
$48,162 CAD
$34,478 USD
View
Final sale: no returns
A
Retailer 4
-
$48,290 CAD
£27,220 GBP
View
B+
Retailer 5
-
$49,584 CAD
$35,496 USD
View
B+
Retailer 6
-
$50,980 CAD
$36,495 USD
View
Retailer 7
-
$53,237 CAD
$38,111 USD
View
Price last confirmed 37 days ago
B+
Retailer 8
-
$56,412 CAD
$40,384 USD
View
Retailer 9
-
$56,459 CAD
$40,417 USD
View
Price last confirmed 11 days ago
B+
Retailer 10
-
$56,921 CAD
$40,748 USD
View
B+
Retailer 11
-
$56,946 CAD
£32,099 GBP
View
B+
Retailer 12
-
$57,756 CAD
€39,377 EUR
View
B
Retailer 13
-
$58,763 CAD
$42,067 USD
View
B+
Retailer 14
-
$59,110 CAD
$42,315 USD
View
Retailer 15
-
$61,114 CAD
$43,750 USD
View
Price last confirmed 40 days ago
B+
Retailer 16
-
$61,707 CAD
ZAR 713,642 ZAR
View
B
Retailer 17
-
$62,816 CAD
$44,968 USD
View
Retailer 18
-
$63,465 CAD
$45,433 USD
View
Price last confirmed 38 days ago
Most Expensive
B
MOH London
CBBE91689 · Oct 29
$80,246 CAD
£45,233 GBP
View
18 more retailers have this diamond
Prices start from $44,179 CADSave up to $36,067 CAD

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
$44,179 CAD