Radiant|Natural|GIA

1.50ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 1235223535

Certificate GIA 1235223535

Diamond specifications and retailer prices

From $3,567 USD
As of November 6, 2026
Save $4,770 USD (57%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $8,337 USD at NZ Jewellers · As of November 5, 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 1235223535. Listed at 26 retailers as of November 5, 2026, with prices from $3,567 to $8,337, a $4,770 spread on the same certified stone. NZ Jewellers lists it at $8,337. 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1235223535
Dimensions7.09 × 5.82 × 4.05 mm
L/W Ratio1.22
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal, Needle
Top View
7.09 mm5.82 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1235223535
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.6%

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: $7,580 USD|Low: $3,462 USD|High: $7,712 USD|Avg: $4,972 USD|-1.7%
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
Retailer 14
November 7, 2026
Retailer 2$3,725 USD
Retailer 3$4,001 USD
Retailer 5$4,335 USD
Retailer 6$4,335 USD
Retailer 8$4,406 USD
Retailer 11$4,679 USD
Retailer 7$4,711 USD
Retailer 4$4,823 USD
Retailer 12$4,970 USD
Retailer 13$4,970 USD
Retailer 14$5,140 USD
Retailer 9$5,384 USD
Retailer 10$5,838 USD
Retailer 1$7,580 USD

43 data points across 14 retailers

26 retailers$3,567 USD to $8,337 USD

A
Cheapest Retailer
-
$3,567 USD
A
Retailer 2
-
$3,725 USD
View
B+
Retailer 3
-
$3,777 USD
View
B+
Retailer 4
-
$3,815 USD
View
B+
Retailer 5
-
$3,823 USD
View
B+
Retailer 6
-
$3,959 USD
View
B+
Retailer 7
-
$4,001 USD
View
Final sale: no returns
B+
Retailer 8
-
$4,072 USD
View
B+
Retailer 9
-
$4,115 USD
View
Retailer 10
-
$4,335 USD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$4,335 USD
View
B+
Retailer 12
-
$4,335 USD
View
B+
Retailer 13
-
$4,406 USD
View
B+
Retailer 14
-
$4,679 USD
View
B+
Retailer 15
-
$4,711 USD
View
Retailer 16
-
$4,823 USD
View
Price last confirmed 29 days ago
B
Retailer 17
-
$4,970 USD
View
B
Retailer 18
-
$4,970 USD
View
B
Retailer 19
-
$4,971 USD
View
B
Retailer 20
-
$5,002 USD
View
B
Retailer 21
-
$5,140 USD
View
Retailer 22
-
$5,284 USD
View
Price last confirmed 15 days ago
B+
Retailer 23
-
$5,384 USD
View
B
Retailer 24
-
$5,838 USD
View
B
Retailer 25
-
$7,580 USD
View
Most Expensive
B
NZ Jewellers
5656a498-0476-440e-ad80-96e46112e2e9 · Nov 5
$8,337 USD
View
25 more retailers have this diamond
Prices start from $3,567 USDSave up to $4,770 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
1.50ct Radiant
$3,567 USD