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1.51ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 754512199

Shape and cutting style on the report: Round brilliant

Certificate IGI 754512199

Diamond specifications and retailer prices

From $3,000 CAD
As of November 6, 2026
Save $4,807 CAD (62%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,807 CAD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 754512199. Listed at 19 retailers as of November 5, 2026, with prices from $3,000 to $7,807, a $4,807 spread on the same certified stone. NZ Jewellers lists it at $7,807. 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

1.51
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.5°
OriginNatural
Grading LabIGI
CertificateIGI 754512199
Dimensions7.17 × 7.23 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.17 mm7.23 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 754512199
Side View
Table 56.0%Crown 36.7°Girdle: Slightly ThickPavilion 40.5°Culet: NoneDepth 63.5%

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: Nov 6
Current: $3,000 CAD|Low: $3,000 CAD|High: $6,620 CAD|Avg: $4,102 CAD|-2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 1$3,000 CAD
Retailer 9$3,212 CAD
Retailer 6$3,385 CAD
Retailer 2$3,680 CAD
Retailer 10$3,793 CAD
Retailer 3$3,998 CAD
Retailer 4$4,371 CAD
Retailer 5$4,557 CAD
Retailer 7$4,612 CAD
Retailer 8$6,525 CAD

33 data points across 10 retailers

19 retailers$3,000 CAD to $7,807 CAD

A
Cheapest Retailer
-
$3,000 CAD
A
Retailer 2
-
$3,212 CAD
View
A
Retailer 3
-
$3,343 CAD
View
A
Retailer 4
-
$3,385 CAD
View
B+
Retailer 5
-
$3,680 CAD
View
Retailer 6
-
$3,735 CAD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$3,735 CAD
View
A
Retailer 8
-
$3,793 CAD
View
B+
Retailer 9
-
$3,800 CAD
View
B+
Retailer 10
-
$3,878 CAD
View
B+
Retailer 11
-
$3,931 CAD
View
A
Retailer 12
-
$3,998 CAD
View
B+
Retailer 13
-
$4,309 CAD
View
A
Retailer 14
-
$4,371 CAD
View
A
Retailer 15
-
$4,557 CAD
View
A
Retailer 16
-
$4,612 CAD
View
B+
Retailer 17
-
$5,729 CAD
View
B+
Retailer 18
-
$6,525 CAD
View
Most Expensive
B
NZ Jewellers
506969c5-90e3-475c-97b0-c094ff3fa585 · Nov 5
$7,807 CAD
$5,590 USD
View
18 more retailers have this diamond
Prices start from $3,000 CADSave up to $4,807 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
1.51ct Round
$3,000 CAD