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Radiant|Natural|GIA

1.50ct E SI2 Radiant Natural Diamond

ID • E/SI2 • GIA 1545738775

Certificate GIA 1545738775

Diamond specifications and retailer prices

From $5,751 AUD
$4,040 USD
As of October 29, 2026
Save $4,250 AUD (42%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $10,777 AUD at NZ Jewellers · As of October 11, 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 E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545738775. Listed at 11 retailers as of October 29, 2026, with a 74% 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
E
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545738775
Dimensions7.40 × 5.70 × 4.00 mm
L/W Ratio1.30
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural
Top View
7.40 mm5.70 mm1.50 ctE / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1545738775
Side View
Table 70.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 70.2%

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: Oct 29
Current: $5,919 AUD|Low: $4,978 AUD|High: $10,000 AUD|Avg: $7,146 AUD|+1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 8$4,978 AUD
Retailer 9$5,751 AUD
Retailer 1$5,919 AUD
Retailer 5$6,377 AUD
Retailer 6$6,377 AUD
Retailer 7$6,590 AUD
Retailer 2$6,820 AUD
Retailer 4$7,057 AUD
Retailer 10$9,573 AUD
Retailer 3$10,000 AUD

24 data points across 10 retailers

11 retailers$5,751 AUD to $10,000 AUD

A
Retailer 1
-
$5,604 AUD
$3,937 USD
Price last confirmed 28 days ago
A
Retailer 2
-
$5,604 AUD
$3,937 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
$5,751 AUD
$4,040 USD
View
A
Retailer 4
-
$5,919 AUD
£3,274 GBP
View
A
Retailer 5
-
$6,377 AUD
$4,480 USD
View
A
Retailer 6
-
$6,377 AUD
$4,480 USD
View
A
Retailer 7
-
$6,465 AUD
$4,542 USD
View
Price last confirmed 17 days ago
A
Retailer 8
-
$6,590 AUD
$4,630 USD
View
A
Retailer 9
-
$7,057 AUD
€4,722 EUR
View
B+
Retailer 10
-
$10,000 AUD
£5,532 GBP
View
Most Expensive
B+
NZ Jewellers
7216da98-f9b1-4307-b244-12a610b7e860 · Oct 11
$10,777 AUD
$7,571 USD
View
Price last confirmed 18 days ago
10 more retailers have this diamond
Prices start from $5,751 AUDSave up to $4,250 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
$5,751 AUD