Radiant|Natural|GIA

1.50ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 6552150956

Certificate GIA 6552150956

Diamond specifications and retailer prices

From $5,172 NZD
As of November 6, 2026
Save $6,236 NZD (55%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $12,032 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552150956. Listed at 20 retailers as of November 6, 2026, with a 121% 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552150956
Dimensions7.44 × 5.73 × 3.94 mm
L/W Ratio1.30
Top View
7.44 mm5.73 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552150956
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.7%

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 6
Current: $12,032 NZD|Low: $5,172 NZD|High: $12,283 NZD|Avg: $7,590 NZD|-2.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 7, 2026
Retailer 15$5,172 NZD
Retailer 10$5,471 NZD
Retailer 14$6,245 NZD
Retailer 4$6,332 NZD
Retailer 11$6,523 NZD
Retailer 6$6,907 NZD
Retailer 7$7,050 NZD
Retailer 9$7,098 NZD
Retailer 3$7,122 NZD
Retailer 2$7,295 NZD
Retailer 5$7,970 NZD
Retailer 12$7,984 NZD
Retailer 13$8,372 NZD
Retailer 8$11,408 NZD
NZ Jewellers$12,032 NZD

28 data points across 15 retailers

20 retailers$5,172 NZD to $11,408 NZD

A
Cheapest Retailer
-
$5,172 NZD
A
Retailer 2
-
$5,471 NZD
View
A
Retailer 3
-
$6,245 NZD
View
A
Retailer 4
-
$6,332 NZD
View
Final sale: no returns
B+
Retailer 5
-
$6,517 NZD
View
B+
Retailer 6
-
$6,521 NZD
View
A
Retailer 7
-
$6,523 NZD
View
B+
Retailer 8
-
$6,891 NZD
View
Retailer 9
-
$6,907 NZD
View
Price last confirmed 20 days ago
Retailer 10
-
$7,050 NZD
View
Price last confirmed 22 days ago
Retailer 11
-
$7,050 NZD
View
Price last confirmed 22 days ago
B+
Retailer 12
-
$7,098 NZD
View
B+
Retailer 13
-
$7,122 NZD
View
B+
Retailer 14
-
$7,295 NZD
View
Retailer 15
-
$7,602 NZD
View
Price last confirmed 30 days ago
Retailer 16
-
$7,970 NZD
View
Price last confirmed 19 days ago
B+
Retailer 17
-
$7,984 NZD
View
B+
Retailer 18
-
$8,372 NZD
View
B
Retailer 19
-
$11,408 NZD
View
Most Expensive
NZ Jewellers
6ec3da5f-792f-46e1-8095-fd586e4f06d1 · Oct 17
$12,032 NZD
$6,670 USD
View
Price last confirmed 20 days ago
19 more retailers have this diamond
Prices start from $5,172 NZDSave up to $6,236 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
$5,172 NZD