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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 $4,724 NZD
HK$20,800 HKD
As of November 1, 2026
Save $5,551 NZD (54%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $11,506 NZD 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 November 1, 2026, with a 118% 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
Colour
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: Nov 1
Current: $7,191 NZD|Low: $4,678 NZD|High: $11,163 NZD|Avg: $6,868 NZD|-5.2%
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
November 2, 2026
Retailer 10$4,724 NZD
Retailer 7$5,065 NZD
Retailer 12$5,605 NZD
Retailer 13$5,671 NZD
Retailer 4$5,902 NZD
Retailer 3$6,325 NZD
Retailer 11$6,401 NZD
Retailer 6$6,421 NZD
Retailer 2$6,529 NZD
Retailer 5$7,075 NZD
Retailer 1$7,191 NZD
Retailer 9$7,553 NZD
Retailer 8$10,275 NZD

32 data points across 13 retailers

21 retailers$4,724 NZD to $10,275 NZD

A
Cheapest Retailer
-
$4,724 NZD
HK$20,800 HKD
A
Retailer 2
-
$5,065 NZD
₹271,875 INR
View
A
Retailer 3
-
$5,605 NZD
$3,159 USD
View
A
Retailer 4
-
$5,671 NZD
$3,196 USD
View
Final sale: no returns
A
Retailer 5
-
$5,902 NZD
SGD 4,495 SGD
View
A
Retailer 6
-
$6,191 NZD
$3,489 USD
View
A
Retailer 7
-
$6,192 NZD
$3,490 USD
View
A
Retailer 8
-
$6,325 NZD
SGD 4,817 SGD
View
A
Retailer 9
-
$6,401 NZD
$3,608 USD
View
A
Retailer 10
-
$6,421 NZD
£2,850 GBP
View
A
Retailer 11
-
$6,529 NZD
$3,680 USD
View
B+
Retailer 12
-
$6,583 NZD
A$5,708 AUD
View
Retailer 13
-
$6,606 NZD
$3,723 USD
View
Price last confirmed 25 days ago
Retailer 14
-
$6,606 NZD
$3,723 USD
View
Price last confirmed 25 days ago
Retailer 15
-
$6,859 NZD
$3,866 USD
View
Price last confirmed 32 days ago
Retailer 16
-
$7,075 NZD
A$6,135 AUD
View
Price last confirmed 24 days ago
B+
Retailer 17
-
$7,191 NZD
€3,860 EUR
View
B+
Retailer 18
-
$7,553 NZD
ZAR 68,766 ZAR
View
Retailer 19
-
$7,621 NZD
$4,295 USD
View
Price last confirmed 24 days ago
B
Retailer 20
-
$10,275 NZD
£4,560 GBP
View
Most Expensive
NZ Jewellers
034ab330-a956-44c8-ade5-01dcb0f68dbe · Sep 30
$11,506 NZD
$6,485 USD
View
Price last confirmed 32 days ago
20 more retailers have this diamond
Prices start from $4,724 NZDSave up to $5,551 NZD

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
$4,724 NZD