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Radiant|Natural|GIA

1.51ct H SI1 Radiant Natural Diamond

ID • H/SI1 • GIA 5563118999

Certificate GIA 5563118999

Diamond specifications and retailer prices

From $4,581 CAD
As of November 1, 2026
Save $4,069 CAD (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $8,651 CAD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5563118999. Listed at 9 retailers as of November 1, 2026, with prices from $4,581 to $8,651, a $4,069 spread on the same certified stone. NZ Jewellers lists it at $8,651. 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
H
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle51.21°
Pavilion angle36.78°
OriginNatural
Grading LabGIA
CertificateGIA 5563118999
Dimensions7.52 × 5.79 × 3.92 mm
L/W Ratio1.30
Girdle conditionThick
Key to symbols
Crystal, Cavity, Feather, Needle, Natural
Top View
7.52 mm5.79 mm1.51 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5563118999
Side View
Table 71.0%Crown 51.21°Girdle: MED-POLPavilion 36.78°Culet: NoneDepth 67.7%

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: Nov 1
Current: $8,651 CAD|Low: $4,531 CAD|High: $8,757 CAD|Avg: $5,951 CAD|-1.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 4, 2026
Retailer 5$4,581 CAD
Retailer 3$4,677 CAD
Retailer 2$4,909 CAD
Retailer 7$4,965 CAD
Retailer 9$5,078 CAD
Retailer 6$5,157 CAD
Retailer 8$5,317 CAD
Retailer 4$8,302 CAD
NZ Jewellers$8,651 CAD

35 data points across 9 retailers

9 retailers$4,581 CAD to $8,651 CAD

A
Cheapest Retailer
-
$4,581 CAD
A
Retailer 2
-
$4,677 CAD
View
A
Retailer 3
-
$4,909 CAD
View
A
Retailer 4
-
$4,965 CAD
View
A
Retailer 5
-
$5,078 CAD
View
A
Retailer 6
-
$5,157 CAD
View
Retailer 7
-
$5,317 CAD
View
Price last confirmed 30 days ago
B+
Retailer 8
-
$8,302 CAD
View
Most Expensive
B+
NZ Jewellers
f1ce2716-69c6-4751-816e-3e008bf35d4b · Nov 3
$8,651 CAD
$6,150 USD
View
8 more retailers have this diamond
Prices start from $4,581 CADSave up to $4,069 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 Radiant
$4,581 CAD