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Round|Natural|GIA

1.51ct N SI1 Round Natural Diamond

EX • N/SI1 • GIA 7556591711

Certificate GIA 7556591711

Diamond specifications and retailer prices

From $3,457 CAD
As of November 6, 2026
Save $1,152 CAD (25%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $7,841 CAD at NZ Jewellers · As of October 17, 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 N colour (tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7556591711. Listed at 9 retailers as of October 31, 2026, with a 33% 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

1.51
Carat
N
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7556591711
Dimensions7.34 × 7.31 × 4.59 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.34 mm7.31 mm1.51 ctN / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7556591711
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,542 CAD|Low: $3,457 CAD|High: $6,058 CAD|Avg: $4,593 CAD|-10.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2$3,457 CAD
Retailer 1$3,542 CAD
Retailer 5$3,750 CAD
Retailer 3$4,464 CAD
Retailer 4$4,609 CAD
Retailer 6$5,567 CAD
Retailer 7$6,058 CAD

22 data points across 7 retailers

9 retailers$3,457 CAD to $4,609 CAD

B+
Cheapest Retailer
-
$3,457 CAD
B+
Retailer 2
-
$3,542 CAD
View
Retailer 3
-
$3,750 CAD
View
Price last confirmed 17 days ago
Retailer 4
-
$3,750 CAD
View
Price last confirmed 21 days ago
Retailer 5
-
$3,895 CAD
View
Price last confirmed 22 days ago
Retailer 6
-
$4,327 CAD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
$4,464 CAD
View
B
Retailer 8
-
$4,609 CAD
View
Most Expensive
NZ Jewellers
48d26669-4c5d-40b5-b7ca-cb9720f662d9 · Oct 17
$7,841 CAD
$5,614 USD
View
Price last confirmed 19 days ago
8 more retailers have this diamond
Prices start from $3,457 CADSave up to $1,152 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.

B+
1.51ct Round
$3,457 CAD