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2.50ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 670478879

Shape and cutting style on the report: Round brilliant

Certificate IGI 670478879

Diamond specifications and retailer prices

From $17,032 CAD
$12,169 USD
As of October 28, 2026
Save $10,687 CAD (39%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $27,719 CAD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 2.5ct natural round diamond

This 2.5ct natural round sits in the two to three carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 670478879. Listed at 13 retailers as of October 28, 2026, with prices from $17,032 to $27,719, a $10,687 spread on the same certified stone. NZ Jewellers lists it at $27,719. 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

2.50
Carat
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 670478879
Dimensions8.64 × 8.72 × 5.34 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
8.64 mm8.72 mm2.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 670478879
Side View
Table 60.0%Crown 34.1°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 61.5%

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 28
Current: $18,125 CAD|Low: $15,299 CAD|High: $25,937 CAD|Avg: $19,500 CAD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 7$16,818 CAD
Retailer 6$17,032 CAD
Retailer 5$17,593 CAD
Retailer 8$18,048 CAD
Retailer 1$18,125 CAD
Retailer 9$20,379 CAD
Retailer 3$20,924 CAD
Retailer 4$22,875 CAD
Retailer 2$25,765 CAD

41 data points across 9 retailers

13 retailers$17,032 CAD to $27,719 CAD

A
Cheapest Retailer
-
$17,032 CAD
$12,169 USD
B+
Retailer 2
-
$17,593 CAD
$12,570 USD
View
Final sale: no returns
B+
Retailer 3
-
$18,048 CAD
$12,895 USD
View
A
Retailer 4
-
$18,125 CAD
£10,197 GBP
View
B+
Retailer 5
-
$18,359 CAD
$13,117 USD
View
B+
Retailer 6
-
$19,582 CAD
$13,991 USD
View
B+
Retailer 7
-
$19,888 CAD
$14,210 USD
View
B+
Retailer 8
-
$20,379 CAD
$14,560 USD
View
B+
Retailer 9
-
$20,652 CAD
$14,756 USD
View
B+
Retailer 10
-
$20,924 CAD
€14,238 EUR
View
B+
Retailer 11
-
$22,875 CAD
ZAR 264,035 ZAR
View
B
Retailer 12
-
$25,765 CAD
£14,495 GBP
View
Most Expensive
B
NZ Jewellers
d4324a38-5c97-4e14-9532-3d9ceabba2dd · Oct 30
$27,719 CAD
$19,805 USD
View
12 more retailers have this diamond
Prices start from $17,032 CADSave up to $10,687 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
2.50ct Round
$17,032 CAD