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Round|Natural|IGI

2.51ct H SI1 Round Natural Diamond

EX • H/SI1 • IGI 773617951

Shape and cutting style on the report: Round brilliant

Certificate IGI 773617951

Diamond specifications and retailer prices

From $19,291 CAD
$13,810 USD
As of October 25, 2026
Save $14,666 CAD (43%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $39,495 CAD at Aurelinne · As of October 21, 2026
View at Aurelinne

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 773617951. Listed at 13 retailers as of October 25, 2026, with a 76% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.51
Carat
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 773617951
Dimensions8.59 × 8.65 × 5.43 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
8.59 mm8.65 mm2.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 773617951
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.9%

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 25
Current: $39,495 CAD|Low: $19,291 CAD|High: $49,734 CAD|Avg: $28,246 CAD
Aurelinne
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 5$19,291 CAD
Retailer 10$20,079 CAD
Retailer 9$20,724 CAD
Retailer 2$22,991 CAD
Retailer 3$25,551 CAD
Retailer 6$30,638 CAD
Retailer 4$33,957 CAD
Retailer 7$36,861 CAD
Retailer 8$38,032 CAD
Aurelinne$39,495 CAD

42 data points across 10 retailers

13 retailers$19,291 CAD to $33,957 CAD

A
Cheapest Retailer
-
$19,291 CAD
$13,810 USD
A
Retailer 2
-
$20,079 CAD
$14,374 USD
View
A
Retailer 3
-
$20,724 CAD
$14,836 USD
View
Final sale: no returns
A
Retailer 4
-
$22,991 CAD
£12,960 GBP
View
A
Retailer 5
-
$24,516 CAD
$17,550 USD
View
A
Retailer 6
-
$24,516 CAD
$17,550 USD
View
B+
Retailer 7
-
$25,340 CAD
$18,140 USD
View
B+
Retailer 8
-
$25,551 CAD
€17,420 EUR
View
B+
Retailer 9
-
$30,638 CAD
$21,933 USD
View
B
Retailer 10
-
$33,957 CAD
£19,141 GBP
View
Retailer 11
-
$36,861 CAD
$26,388 USD
View
Price last confirmed 9 days ago
Retailer 12
-
$38,032 CAD
$27,226 USD
View
Price last confirmed 9 days ago
Most Expensive
Aurelinne
7aac21e0-3eb0-4766-9f63-ac646a3e278b · Oct 21
$39,495 CAD
$28,273 USD
View
Price last confirmed 10 days ago
12 more retailers have this diamond
Prices start from $19,291 CADSave up to $14,666 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
2.51ct Round
$19,291 CAD