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Radiant|Natural|GIA

1.50ct I SI1 Radiant Natural Diamond

VG • I/SI1 • GIA 1453276340

Certificate GIA 1453276340

Diamond specifications and retailer prices

From $4,098 AUD
As of November 2, 2026
Save $5,021 AUD (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $9,120 AUD at MOH London · As of November 2, 2026
View at MOH London

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1453276340. Listed at 17 retailers as of November 2, 2026, with prices from $4,098 to $9,120, a $5,021 spread on the same certified stone. MOH London lists it at $9,120. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle57.29°
OriginNatural
Grading LabGIA
CertificateGIA 1453276340
Dimensions6.31 × 6.28 × 4.25 mm
L/W Ratio1.00
Girdle conditionPolished
Top View
6.31 mm6.28 mm1.50 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1453276340
Side View
Table 64.0%CrownGirdle: Slightly ThickPavilion 57.29°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 2
Current: $9,120 AUD|Low: $4,023 AUD|High: $9,757 AUD|Avg: $5,745 AUD|-6.5%
MOH London
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
November 7, 2026
Retailer 11$4,098 AUD
Retailer 15$4,400 AUD
Retailer 6$4,433 AUD
Retailer 7$4,465 AUD
Retailer 14$4,560 AUD
Retailer 16$4,676 AUD
Retailer 4$4,766 AUD
Retailer 10$4,956 AUD
Retailer 2$5,206 AUD
Retailer 5$5,603 AUD
Retailer 8$6,191 AUD
Retailer 13$6,382 AUD
Retailer 3$6,704 AUD
Retailer 12$7,321 AUD
Retailer 9$8,606 AUD
MOH London$9,120 AUD

26 data points across 16 retailers

17 retailers$4,098 AUD to $9,120 AUD

A
Cheapest Retailer
-
$4,098 AUD
A
Retailer 2
-
$4,400 AUD
View
A
Retailer 3
-
$4,433 AUD
View
A
Retailer 4
-
$4,465 AUD
View
A
Retailer 5
-
$4,560 AUD
View
Final sale: no returns
Retailer 6
-
$4,676 AUD
View
Price last confirmed 6 days ago
Retailer 7
-
$4,766 AUD
View
Price last confirmed 5 days ago
A
Retailer 8
-
$4,956 AUD
View
A
Retailer 9
-
$5,206 AUD
View
Retailer 10
-
$5,603 AUD
View
Price last confirmed 8 days ago
Retailer 11
-
$6,191 AUD
View
Price last confirmed 30 days ago
B+
Retailer 12
-
$6,194 AUD
View
A
Retailer 13
-
$6,382 AUD
View
A
Retailer 14
-
$6,704 AUD
View
A
Retailer 15
-
$7,321 AUD
View
B+
Retailer 16
-
$8,606 AUD
View
Most Expensive
B+
MOH London
5A30393B5 · Nov 2
$9,120 AUD
£4,934 GBP
View
16 more retailers have this diamond
Prices start from $4,098 AUDSave up to $5,021 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
$4,098 AUD