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Radiant|Natural|GIA

1.50ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 2558742615

Certificate GIA 2558742615

Diamond specifications and retailer prices

From $6,633 AUD
HK$36,400 HKD
As of November 1, 2026
Save $7,352 AUD (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $14,801 AUD 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 G 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 2558742615. Listed at 21 retailers as of October 28, 2026, with a 111% 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558742615
Dimensions7.53 × 5.77 × 3.96 mm
L/W Ratio1.31
Girdle conditionPolished
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle, Indented Natural
Top View
7.53 mm5.77 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2558742615
Side View
Table 68.0%CrownGirdle: Very ThickPavilionCulet: 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 1
Current: $9,668 AUD|Low: $6,633 AUD|High: $14,048 AUD|Avg: $9,665 AUD|+0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7$6,633 AUD
Retailer 4$7,069 AUD
Retailer 9$7,767 AUD
Retailer 10$8,167 AUD
Retailer 3$8,490 AUD
Retailer 2$8,795 AUD
Retailer 1$9,668 AUD
Retailer 6$10,873 AUD
Retailer 5$13,039 AUD
Retailer 8$13,985 AUD

32 data points across 10 retailers

21 retailers$6,633 AUD to $13,985 AUD

A
Cheapest Retailer
-
$6,633 AUD
HK$36,400 HKD
A
Retailer 2
-
$7,069 AUD
₹472,908 INR
View
A
Retailer 3
-
$7,384 AUD
$5,187 USD
View
A
Retailer 4
-
$7,569 AUD
SGD 7,185 SGD
View
A
Retailer 5
-
$7,767 AUD
SGD 7,373 SGD
View
A
Retailer 6
-
$8,076 AUD
$5,673 USD
View
A
Retailer 7
-
$8,079 AUD
$5,675 USD
View
A
Retailer 8
-
$8,167 AUD
$5,737 USD
View
Final sale: no returns
A
Retailer 9
-
$8,490 AUD
£4,696 GBP
View
Retailer 10
-
$8,795 AUD
View
Price last confirmed 29 days ago
Retailer 11
-
$8,849 AUD
$6,216 USD
View
Price last confirmed 17 days ago
Retailer 12
-
$8,849 AUD
$6,216 USD
View
Price last confirmed 16 days ago
Retailer 13
-
$8,849 AUD
$6,216 USD
View
Price last confirmed 15 days ago
B+
Retailer 14
-
$9,074 AUD
$6,374 USD
View
B+
Retailer 15
-
$9,363 AUD
View
B+
Retailer 16
-
$9,668 AUD
€6,468 EUR
View
Retailer 17
-
$10,211 AUD
$7,173 USD
View
Price last confirmed 14 days ago
B+
Retailer 18
-
$10,873 AUD
ZAR 123,390 ZAR
View
B+
Retailer 19
-
$13,039 AUD
£7,212 GBP
View
B
Retailer 20
-
$13,985 AUD
£7,735 GBP
View
Most Expensive
NZ Jewellers
fe7edb97-4bb4-46b2-ae0e-dfea42feccae · Oct 17
$14,801 AUD
$10,397 USD
View
Price last confirmed 15 days ago
20 more retailers have this diamond
Prices start from $6,633 AUDSave up to $7,352 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
$6,633 AUD