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Radiant|Natural|GIA

1.51ct I SI2 Radiant Natural Diamond

ID • I/SI2 • GIA 6512748750

Certificate GIA 6512748750

Diamond specifications and retailer prices

From $5,888 CAD
As of November 2, 2026
Save $4,629 CAD (44%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $10,517 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6512748750. Listed at 6 retailers as of November 2, 2026, with prices from $5,888 to $10,517, a $4,629 spread on the same certified stone. NZ Jewellers lists it at $10,517. 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
I
Color
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.29°
Pavilion angle30.13°
OriginNatural
Grading LabGIA
CertificateGIA 6512748750
Dimensions7.85 × 5.68 × 3.74 mm
L/W Ratio1.38
Top View
7.85 mm5.68 mm1.51 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6512748750
Side View
Table 66.0%Crown 43.29°Girdle: Slightly ThickPavilion 30.13°Culet: NoneDepth 65.8%

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: $10,517 CAD|Low: $5,887 CAD|High: $10,663 CAD|Avg: $7,245 CAD|-1.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 3$5,888 CAD
Retailer 2$6,037 CAD
Retailer 5$6,037 CAD
Retailer 6$6,234 CAD
Retailer 9$6,445 CAD
Retailer 7$6,697 CAD
Retailer 8$6,842 CAD
Retailer 4$9,616 CAD
NZ Jewellers$10,517 CAD

29 data points across 9 retailers

6 retailers$5,888 CAD to $10,517 CAD

A
Cheapest Retailer
-
$5,888 CAD
A
Retailer 2
-
$6,037 CAD
View
A
Retailer 3
-
$6,037 CAD
View
A
Retailer 4
-
$6,234 CAD
View
B+
Retailer 5
-
$9,616 CAD
View
Most Expensive
B
NZ Jewellers
d94f7b69-be2e-462a-b5bf-7ce1ebfe390a · Nov 3
$10,517 CAD
$7,477 USD
View
5 more retailers have this diamond
Prices start from $5,888 CADSave up to $4,629 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
$5,888 CAD