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Radiant|Natural|GIA

1.51ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 1459117061

Certificate GIA 1459117061

Diamond specifications and retailer prices

From $3,683 CAD
HK$20,600 HKD
As of October 30, 2026
Save $4,905 CAD (57%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $9,059 CAD at NZ Jewellers · As of September 30, 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 1459117061. Listed at 21 retailers as of October 26, 2026, with a 133% 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
J
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1459117061
Dimensions9.18 × 5.19 × 3.55 mm
L/W Ratio1.77
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
9.18 mm5.19 mm1.51 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1459117061
Side View
Table 65.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 68.4%

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: Oct 30
Current: $5,055 CAD|Low: $3,683 CAD|High: $8,801 CAD|Avg: $5,449 CAD|-5.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 11$3,683 CAD
Retailer 7$4,002 CAD
Retailer 9$4,413 CAD
Retailer 10$4,464 CAD
Retailer 4$4,647 CAD
Retailer 3$4,979 CAD
Retailer 8$5,040 CAD
Retailer 1$5,055 CAD
Retailer 12$5,141 CAD
Retailer 5$5,570 CAD
Retailer 6$5,665 CAD
Retailer 13$6,245 CAD
Retailer 2$8,588 CAD

32 data points across 13 retailers

21 retailers$3,683 CAD to $8,588 CAD

A
Cheapest Retailer
-
$3,683 CAD
HK$20,600 HKD
A
Retailer 2
-
$4,002 CAD
₹272,880 INR
View
A
Retailer 3
-
$4,413 CAD
$3,159 USD
View
A
Retailer 4
-
$4,464 CAD
$3,196 USD
View
Final sale: no returns
A
Retailer 5
-
$4,647 CAD
SGD 4,495 SGD
View
A
Retailer 6
-
$4,874 CAD
$3,489 USD
View
A
Retailer 7
-
$4,875 CAD
$3,490 USD
View
A
Retailer 8
-
$4,979 CAD
SGD 4,817 SGD
View
A
Retailer 9
-
$5,040 CAD
$3,608 USD
View
A
Retailer 10
-
$5,055 CAD
£2,850 GBP
View
A
Retailer 11
-
$5,141 CAD
$3,680 USD
View
B+
Retailer 12
-
$5,183 CAD
A$5,708 AUD
View
Retailer 13
-
$5,201 CAD
$3,723 USD
View
Price last confirmed 23 days ago
Retailer 14
-
$5,201 CAD
$3,723 USD
View
Price last confirmed 23 days ago
Retailer 15
-
$5,400 CAD
$3,866 USD
View
Price last confirmed 30 days ago
Retailer 16
-
$5,570 CAD
A$6,135 AUD
View
Price last confirmed 22 days ago
B+
Retailer 17
-
$5,665 CAD
€3,862 EUR
View
Retailer 18
-
$6,000 CAD
$4,295 USD
View
Price last confirmed 22 days ago
B+
Retailer 19
-
$6,245 CAD
ZAR 72,218 ZAR
View
B
Retailer 20
-
$8,588 CAD
£4,841 GBP
View
Most Expensive
NZ Jewellers
034ab330-a956-44c8-ade5-01dcb0f68dbe · Sep 30
$9,059 CAD
$6,485 USD
View
Price last confirmed 30 days ago
20 more retailers have this diamond
Prices start from $3,683 CADSave up to $4,905 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
$3,683 CAD