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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 $2,637 USD
HK$20,600 HKD
As of October 29, 2026
Save $3,511 USD (57%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $6,485 USD 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 29
Current: $3,608 USD|Low: $2,637 USD|High: $6,300 USD|Avg: $3,913 USD|-6.2%
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 29, 2026
Retailer 10$2,637 USD
Retailer 6$2,867 USD
Retailer 7$3,159 USD
Retailer 9$3,196 USD
Retailer 4$3,326 USD
Retailer 3$3,565 USD
Retailer 1$3,608 USD
Retailer 11$3,680 USD
Retailer 2$3,817 USD
Retailer 5$3,987 USD
Retailer 8$4,049 USD
Retailer 12$4,470 USD
Retailer 13$6,148 USD

32 data points across 13 retailers

21 retailers$2,637 USD to $6,148 USD

A
Cheapest Retailer
-
$2,637 USD
HK$20,600 HKD
A
Retailer 2
-
$2,867 USD
₹273,088 INR
View
A
Retailer 3
-
$3,159 USD
View
A
Retailer 4
-
$3,196 USD
View
Final sale: no returns
A
Retailer 5
-
$3,326 USD
SGD 4,495 SGD
View
A
Retailer 6
-
$3,489 USD
View
A
Retailer 7
-
$3,490 USD
View
A
Retailer 8
-
$3,565 USD
SGD 4,817 SGD
View
A
Retailer 9
-
$3,608 USD
£2,841 GBP
View
A
Retailer 10
-
$3,680 USD
View
B+
Retailer 11
-
$3,710 USD
A$5,708 AUD
View
B+
Retailer 12
-
$3,723 USD
View
Price last confirmed 21 days ago
B+
Retailer 13
-
$3,723 USD
View
Price last confirmed 21 days ago
B+
Retailer 14
-
$3,817 USD
View
B+
Retailer 15
-
$3,866 USD
View
Price last confirmed 28 days ago
B+
Retailer 16
-
$3,987 USD
A$6,135 AUD
View
Price last confirmed 20 days ago
B+
Retailer 17
-
$4,049 USD
€3,856 EUR
View
B+
Retailer 18
-
$4,295 USD
View
Price last confirmed 20 days ago
B+
Retailer 19
-
$4,470 USD
ZAR 72,218 ZAR
View
B
Retailer 20
-
$6,148 USD
£4,841 GBP
View
Most Expensive
B
NZ Jewellers
034ab330-a956-44c8-ade5-01dcb0f68dbe · Sep 30
$6,485 USD
View
Price last confirmed 28 days ago
20 more retailers have this diamond
Prices start from $2,637 USDSave up to $3,511 USD

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
$2,637 USD