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Radiant|Natural|GIA

1.50ct I SI2 Radiant Natural Diamond

ID • I/SI2 • GIA 5553121313

Certificate GIA 5553121313

Diamond specifications and retailer prices

From $5,618 AUD
As of November 6, 2026
Save $5,106 AUD (48%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $10,723 AUD at NZ Jewellers · As of November 3, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553121313. Listed at 7 retailers as of November 3, 2026, with prices from $5,618 to $10,723, a $5,106 spread on the same certified stone. NZ Jewellers lists it at $10,723. 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
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle49.93°
Pavilion angle35.53°
OriginNatural
Grading LabGIA
CertificateGIA 5553121313
Dimensions7.47 × 5.76 × 3.90 mm
L/W Ratio1.30
Top View
7.47 mm5.76 mm1.50 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553121313
Side View
Table 71.0%Crown 49.93°Girdle: Slightly ThickPavilion 35.53°Culet: NoneDepth 67.7%

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 6
Current: $10,723 AUD|Low: $5,618 AUD|High: $10,854 AUD|Avg: $7,215 AUD|-1.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 8$5,618 AUD
Retailer 7$5,622 AUD
Retailer 4$6,004 AUD
Retailer 2$6,155 AUD
Retailer 6$6,155 AUD
Retailer 9$6,244 AUD
Retailer 5$6,362 AUD
Retailer 10$7,115 AUD
Retailer 3$10,293 AUD
NZ Jewellers$10,723 AUD

33 data points across 10 retailers

7 retailers$5,618 AUD to $10,723 AUD

A
Cheapest Retailer
-
$5,618 AUD
A
Retailer 2
-
$6,004 AUD
View
A
Retailer 3
-
$6,155 AUD
View
A
Retailer 4
-
$6,155 AUD
View
A
Retailer 5
-
$6,362 AUD
View
B+
Retailer 6
-
$10,293 AUD
View
Most Expensive
B
NZ Jewellers
0d7ed5b2-88a6-4fce-b8d2-eab75be28984 · Nov 3
$10,723 AUD
$7,368 USD
View
6 more retailers have this diamond
Prices start from $5,618 AUDSave up to $5,106 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
$5,618 AUD