Radiant|Natural|GIA

1.50ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 2546118660

Certificate GIA 2546118660

Diamond specifications and retailer prices

From $5,610 NZD
As of November 6, 2026
Save $6,622 NZD (54%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $12,894 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 2546118660. Listed at 21 retailers as of November 6, 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

1.50
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2546118660
Dimensions7.50 × 5.78 × 3.93 mm
L/W Ratio1.30
Top View
7.50 mm5.78 mm1.50 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2546118660
Side View
Table 66.0%CrownGirdle: ThickPavilionCulet: NoneDepth 68.0%

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: $12,894 NZD|Low: $5,587 NZD|High: $12,894 NZD|Avg: $8,045 NZD
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
Retailer 16
Retailer 17
November 7, 2026
Retailer 4$5,610 NZD
Retailer 13$5,911 NZD
Retailer 17$6,752 NZD
Retailer 6$6,786 NZD
Retailer 11$7,017 NZD
Retailer 14$7,069 NZD
Retailer 8$7,401 NZD
Retailer 12$7,448 NZD
Retailer 9$7,542 NZD
Retailer 5$7,620 NZD
Retailer 3$7,649 NZD
Retailer 2$7,818 NZD
Retailer 15$8,273 NZD
Retailer 7$8,540 NZD
Retailer 16$8,976 NZD
Retailer 10$12,232 NZD
NZ Jewellers$12,894 NZD

27 data points across 17 retailers

21 retailers$5,610 NZD to $12,232 NZD

A
Cheapest Retailer
-
$5,610 NZD
A
Retailer 2
-
$5,911 NZD
View
A
Retailer 3
-
$6,752 NZD
View
A
Retailer 4
-
$6,786 NZD
View
Final sale: no returns
B+
Retailer 5
-
$7,017 NZD
View
B+
Retailer 6
-
$7,044 NZD
View
B+
Retailer 7
-
$7,069 NZD
View
Retailer 8
-
$7,401 NZD
View
Price last confirmed 20 days ago
B+
Retailer 9
-
$7,430 NZD
View
B+
Retailer 10
-
$7,448 NZD
View
Retailer 11
-
$7,542 NZD
View
Price last confirmed 22 days ago
Retailer 12
-
$7,542 NZD
View
Price last confirmed 22 days ago
B+
Retailer 13
-
$7,620 NZD
View
B+
Retailer 14
-
$7,649 NZD
View
Retailer 15
-
$7,818 NZD
View
Retailer 16
-
$8,137 NZD
View
Price last confirmed 34 days ago
B+
Retailer 17
-
$8,273 NZD
View
Retailer 18
-
$8,540 NZD
View
Price last confirmed 19 days ago
B+
Retailer 19
-
$8,976 NZD
View
B
Retailer 20
-
$12,232 NZD
View
Most Expensive
NZ Jewellers
0f92685b-5a49-416b-b35c-1f1e2a3ce145 · Oct 17
$12,894 NZD
$7,148 USD
View
Price last confirmed 20 days ago
20 more retailers have this diamond
Prices start from $5,610 NZDSave up to $6,622 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
$5,610 NZD