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Round|Natural|IGI

3.21ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 826667269

Shape and cutting style on the report: Round brilliant

Certificate IGI 826667269

Diamond specifications and retailer prices

From $18,355 CAD
$13,140 USD
As of October 30, 2026
Save $10,177 CAD (36%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $28,532 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 3.21ct natural round diamond

This 3.21ct natural round sits in the three to five carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 826667269. Listed at 17 retailers as of October 29, 2026, with prices from $18,355 to $28,532, a $10,177 spread on the same certified stone. MOH London lists it at $28,532. 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

3.21
Carat
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.9°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 826667269
Dimensions9.37 × 9.41 × 5.85 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
9.37 mm9.41 mm3.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 826667269
Side View
Table 57.0%Crown 35.9°Girdle: MediumPavilion 40.7°Culet: NoneDepth 62.3%

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: Oct 30
Current: $28,532 CAD|Low: $18,355 CAD|High: $29,772 CAD|Avg: $21,847 CAD|-4.2%
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
October 31, 2026
Retailer 14$18,355 CAD
Retailer 13$18,440 CAD
Retailer 12$19,223 CAD
Retailer 2$19,541 CAD
Retailer 3$19,682 CAD
Retailer 8$19,959 CAD
Retailer 4$20,059 CAD
Retailer 11$21,396 CAD
Retailer 6$21,730 CAD
Retailer 5$22,275 CAD
Retailer 7$22,566 CAD
Retailer 9$22,957 CAD
Retailer 10$23,432 CAD
Retailer 15$25,743 CAD
MOH London$28,532 CAD

35 data points across 15 retailers

17 retailers$18,355 CAD to $28,532 CAD

A
Cheapest Retailer
-
$18,355 CAD
$13,140 USD
A
Retailer 2
-
$18,440 CAD
$13,201 USD
View
A
Retailer 3
-
$19,223 CAD
$13,761 USD
View
Final sale: no returns
A
Retailer 4
-
$19,541 CAD
£11,015 GBP
View
A
Retailer 5
-
$19,682 CAD
$14,090 USD
View
A
Retailer 6
-
$19,959 CAD
£11,251 GBP
View
A
Retailer 7
-
$20,059 CAD
$14,360 USD
View
A
Retailer 8
-
$21,396 CAD
$15,317 USD
View
A
Retailer 9
-
$21,730 CAD
$15,556 USD
View
A
Retailer 10
-
$22,275 CAD
$15,946 USD
View
Retailer 11
-
$22,566 CAD
$16,154 USD
View
Price last confirmed 61 days ago
A
Retailer 12
-
$22,566 CAD
$16,154 USD
View
A
Retailer 13
-
$22,957 CAD
€15,652 EUR
View
A
Retailer 14
-
$23,432 CAD
ZAR 270,985 ZAR
View
B+
Retailer 15
-
$25,743 CAD
$18,429 USD
View
Retailer 16
-
$25,743 CAD
$18,429 USD
View
Price last confirmed 63 days ago
Most Expensive
A
MOH London
15A73A5D1 · Oct 29
$28,532 CAD
£16,083 GBP
View
16 more retailers have this diamond
Prices start from $18,355 CADSave up to $10,177 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
3.21ct Round
$18,355 CAD