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Radiant|Natural|GIA

1.50ct I SI2 Radiant Natural Diamond

VG • I/SI2 • GIA 6551177998

Certificate GIA 6551177998

Diamond specifications and retailer prices

From $4,209 AUD
As of November 6, 2026
Save $5,110 AUD (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $9,774 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551177998. Listed at 18 retailers as of November 2, 2026, with a 121% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551177998
Dimensions7.39 × 5.67 × 4.02 mm
L/W Ratio1.30
Top View
7.39 mm5.67 mm1.50 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551177998
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $9,774 AUD|Low: $4,192 AUD|High: $9,774 AUD|Avg: $6,037 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
November 7, 2026
Retailer 14$4,209 AUD
Retailer 8$4,443 AUD
Retailer 11$4,970 AUD
Retailer 3$5,143 AUD
Retailer 9$5,299 AUD
Retailer 6$5,611 AUD
Retailer 7$5,611 AUD
Retailer 2$5,643 AUD
Retailer 15$5,785 AUD
Retailer 4$5,826 AUD
Retailer 13$5,836 AUD
Retailer 5$6,474 AUD
Retailer 10$6,487 AUD
Retailer 12$9,319 AUD
NZ Jewellers$9,774 AUD

31 data points across 15 retailers

18 retailers$4,209 AUD to $9,319 AUD

A
Cheapest Retailer
-
$4,209 AUD
A
Retailer 2
-
$4,443 AUD
View
A
Retailer 3
-
$4,970 AUD
View
A
Retailer 4
-
$5,143 AUD
View
Final sale: no returns
B+
Retailer 5
-
$5,187 AUD
View
B+
Retailer 6
-
$5,299 AUD
View
B+
Retailer 7
-
$5,494 AUD
View
Retailer 8
-
$5,611 AUD
View
Price last confirmed 20 days ago
Retailer 9
-
$5,611 AUD
View
Price last confirmed 22 days ago
A
Retailer 10
-
$5,643 AUD
View
B+
Retailer 11
-
$5,785 AUD
View
Retailer 12
-
$5,826 AUD
View
Price last confirmed 22 days ago
B+
Retailer 13
-
$5,836 AUD
View
Retailer 14
-
$6,474 AUD
View
Price last confirmed 19 days ago
B+
Retailer 15
-
$6,487 AUD
View
Retailer 16
-
$6,517 AUD
View
Price last confirmed 62 days ago
B+
Retailer 17
-
$9,319 AUD
View
Most Expensive
NZ Jewellers
07bdb9c0-730f-41c8-b1b8-fa274a8128ff · Oct 17
$9,774 AUD
$6,716 USD
View
Price last confirmed 20 days ago
17 more retailers have this diamond
Prices start from $4,209 AUDSave up to $5,110 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
$4,209 AUD