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Radiant|Natural|GIA

1.50ct I SI1 Radiant Natural Diamond

ID • I/SI1 • GIA 2567450930

Certificate GIA 2567450930

Diamond specifications and retailer prices

From $5,865 AUD
$4,120 USD
As of November 1, 2026
Save $6,915 AUD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $13,580 AUD at NZ Jewellers · As of October 14, 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 I 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 2567450930. Listed at 20 retailers as of October 29, 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
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2567450930
Dimensions7.43 × 5.68 × 3.95 mm
L/W Ratio1.31
Girdle conditionPolished
Top View
7.43 mm5.68 mm1.50 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2567450930
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.4%

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: $13,580 AUD|Low: $5,667 AUD|High: $13,580 AUD|Avg: $8,033 AUD
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 2, 2026
Retailer 19$5,865 AUD
Retailer 3$5,868 AUD
Retailer 9$6,244 AUD
Retailer 8$6,450 AUD
Retailer 6$6,538 AUD
Retailer 20$6,588 AUD
Retailer 16$6,749 AUD
Retailer 11$6,798 AUD
Retailer 10$6,881 AUD
Retailer 13$7,059 AUD
Retailer 18$7,075 AUD
Retailer 12$7,262 AUD
Retailer 17$7,444 AUD
Retailer 4$7,653 AUD
Retailer 2$7,659 AUD
Retailer 14$8,193 AUD
Retailer 15$9,018 AUD
Retailer 21$9,811 AUD
Retailer 7$12,102 AUD
Retailer 5$12,781 AUD
NZ Jewellers$13,580 AUD

18 data points across 21 retailers

20 retailers$5,865 AUD to $12,781 AUD

A
Cheapest Retailer
-
$5,865 AUD
$4,120 USD
A
Retailer 2
-
$5,868 AUD
HK$32,200 HKD
View
A
Retailer 3
-
$6,244 AUD
$4,386 USD
View
A
Retailer 4
-
$6,450 AUD
$4,531 USD
View
A
Retailer 5
-
$6,538 AUD
$4,593 USD
View
A
Retailer 6
-
$6,588 AUD
€4,407 EUR
View
A
Retailer 7
-
$6,749 AUD
$4,741 USD
View
Final sale: no returns
A
Retailer 8
-
$6,798 AUD
$4,775 USD
View
A
Retailer 9
-
$6,881 AUD
View
A
Retailer 10
-
$7,059 AUD
$4,959 USD
View
A
Retailer 11
-
$7,075 AUD
$4,970 USD
View
Retailer 12
-
$7,262 AUD
SGD 6,893 SGD
View
Price last confirmed 17 days ago
A
Retailer 13
-
$7,444 AUD
£4,118 GBP
View
A
Retailer 14
-
$7,653 AUD
$5,376 USD
View
A
Retailer 15
-
$7,659 AUD
£4,236 GBP
View
B+
Retailer 16
-
$9,018 AUD
€6,033 EUR
View
B+
Retailer 17
-
$9,811 AUD
ZAR 111,341 ZAR
View
B
Retailer 18
-
$12,102 AUD
$8,501 USD
View
B
Retailer 19
-
$12,781 AUD
£7,069 GBP
View
Most Expensive
NZ Jewellers
76fc132b-6cf7-488f-ba27-598bdc682ed1 · Oct 14
$13,580 AUD
$9,539 USD
View
Price last confirmed 18 days ago
19 more retailers have this diamond
Prices start from $5,865 AUDSave up to $6,915 AUD

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
$5,865 AUD