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Radiant|Natural|GIA

1.51ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 1236729301

Certificate GIA 1236729301

Diamond specifications and retailer prices

From $3,802 CAD
As of November 2, 2026
Save $4,462 CAD (54%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,264 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 J 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 1236729301. Listed at 8 retailers as of November 2, 2026, with prices from $3,802 to $8,264, a $4,462 spread on the same certified stone. NZ Jewellers lists it at $8,264. 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
J
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle44.89°
Pavilion angle31.06°
OriginNatural
Grading LabGIA
CertificateGIA 1236729301
Dimensions7.31 × 5.60 × 3.89 mm
L/W Ratio1.31
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Needle, Indented Natural
Top View
7.31 mm5.60 mm1.51 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1236729301
Side View
Table 67.0%Crown 44.89°Girdle: ThickPavilion 31.06°Culet: NoneDepth 69.6%

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 2
Current: $8,264 CAD|Low: $3,801 CAD|High: $8,607 CAD|Avg: $5,050 CAD|-4.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 3$3,802 CAD
Retailer 5$3,875 CAD
Retailer 7$3,953 CAD
Retailer 4$4,104 CAD
Retailer 6$4,161 CAD
Retailer 8$4,473 CAD
Retailer 10$4,659 CAD
Retailer 9$4,879 CAD
Retailer 2$6,925 CAD
NZ Jewellers$8,264 CAD

35 data points across 10 retailers

8 retailers$3,802 CAD to $8,264 CAD

A
Cheapest Retailer
-
$3,802 CAD
A
Retailer 2
-
$3,875 CAD
View
A
Retailer 3
-
$3,953 CAD
View
A
Retailer 4
-
$4,104 CAD
View
Retailer 5
-
$4,161 CAD
View
Price last confirmed 9 days ago
Retailer 6
-
$4,473 CAD
View
Price last confirmed 31 days ago
B+
Retailer 7
-
$6,925 CAD
View
Most Expensive
B
NZ Jewellers
ba55ec91-1321-4ed6-b548-4f3c073efa7c · Nov 3
$8,264 CAD
$5,875 USD
View
7 more retailers have this diamond
Prices start from $3,802 CADSave up to $4,462 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
$3,802 CAD