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Radiant|Natural|GIA

1.50ct J SI2 Radiant Natural Diamond

ID • J/SI2 • GIA 7551251473

Certificate GIA 7551251473

Diamond specifications and retailer prices

From $4,179 NZD
HK$18,400 HKD
As of November 1, 2026
Save $5,094 NZD (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $9,661 NZD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded J 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 7551251473. Listed at 17 retailers as of November 1, 2026, with a 122% 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

1.50
Carat
J
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7551251473
Dimensions7.39 × 5.83 × 4.14 mm
L/W Ratio1.27
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle, Indented Natural
Top View
7.39 mm5.83 mm1.50 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7551251473
Side View
Table 68.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.1%

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: $5,794 NZD|Low: $4,133 NZD|High: $9,649 NZD|Avg: $5,761 NZD|-2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 5$4,179 NZD
Retailer 3$4,485 NZD
Retailer 2$4,996 NZD
Retailer 7$5,117 NZD
Retailer 1$5,794 NZD
Retailer 9$5,799 NZD
Retailer 10$5,810 NZD
Retailer 8$5,979 NZD
Retailer 6$6,491 NZD
Retailer 4$9,273 NZD

35 data points across 10 retailers

17 retailers$4,179 NZD to $9,273 NZD

A
Cheapest Retailer
-
$4,179 NZD
HK$18,400 HKD
A
Retailer 2
-
$4,485 NZD
₹240,727 INR
View
A
Retailer 3
-
$4,996 NZD
SGD 3,805 SGD
View
A
Retailer 4
-
$5,117 NZD
$2,884 USD
View
Final sale: no returns
A
Retailer 5
-
$5,287 NZD
$2,980 USD
View
Retailer 6
-
$5,545 NZD
$3,125 USD
View
Price last confirmed 15 days ago
B+
Retailer 7
-
$5,626 NZD
A$4,878 AUD
View
Retailer 8
-
$5,674 NZD
$3,198 USD
View
Price last confirmed 17 days ago
A
Retailer 9
-
$5,794 NZD
£2,571 GBP
View
A
Retailer 10
-
$5,799 NZD
$3,268 USD
View
A
Retailer 11
-
$5,810 NZD
SGD 4,425 SGD
View
Retailer 12
-
$5,892 NZD
$3,321 USD
View
Price last confirmed 16 days ago
A
Retailer 13
-
$5,979 NZD
$3,370 USD
View
Retailer 14
-
$6,398 NZD
$3,606 USD
View
Price last confirmed 14 days ago
A
Retailer 15
-
$6,491 NZD
€3,484 EUR
View
B
Retailer 16
-
$9,273 NZD
£4,115 GBP
View
Most Expensive
NZ Jewellers
658d74bd-d713-4b2e-b756-d3b357c6c59c · Oct 17
$9,661 NZD
$5,445 USD
View
Price last confirmed 15 days ago
16 more retailers have this diamond
Prices start from $4,179 NZDSave up to $5,094 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
1.50ct Radiant
$4,179 NZD