CaratHunter
Plans
Round|Natural|GIA

1.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6445559608

Certificate GIA 6445559608

Diamond specifications and retailer prices

From $8,596 AUD
As of November 6, 2026
Save $7,735 AUD (47%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $19,654 AUD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6445559608. Listed at 23 retailers as of November 4, 2026, with a 90% 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle34°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6445559608
Dimensions7.33 × 7.29 × 4.50 mm
L/W Ratio1.01
Top View
7.33 mm7.29 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6445559608
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $12,020 AUD|Low: $8,529 AUD|High: $16,574 AUD|Avg: $11,694 AUD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8$8,762 AUD
Retailer 2$9,285 AUD
Retailer 10$9,825 AUD
Retailer 3$10,835 AUD
Retailer 7$11,259 AUD
Retailer 9$11,268 AUD
Retailer 1$12,020 AUD
Retailer 5$12,049 AUD
Retailer 4$14,336 AUD
Retailer 6$16,331 AUD

37 data points across 10 retailers

23 retailers$8,596 AUD to $16,331 AUD

B+
Cheapest Retailer
-
$8,596 AUD
B+
Retailer 2
-
$8,762 AUD
View
B+
Retailer 3
-
$8,874 AUD
View
B+
Retailer 4
-
$9,285 AUD
View
B+
Retailer 5
-
$9,825 AUD
View
Final sale: no returns
B+
Retailer 6
-
$9,839 AUD
View
B
Retailer 7
-
$10,463 AUD
View
Retailer 8
-
$10,646 AUD
View
Price last confirmed 36 days ago
B
Retailer 9
-
$10,792 AUD
View
Retailer 10
-
$10,809 AUD
View
Price last confirmed 38 days ago
B
Retailer 11
-
$10,835 AUD
View
Retailer 12
-
$11,259 AUD
View
Price last confirmed 15 days ago
B+
Retailer 13
-
$11,268 AUD
View
B
Retailer 14
-
$11,760 AUD
View
B
Retailer 15
-
$11,760 AUD
View
B+
Retailer 16
-
$12,020 AUD
View
B+
Retailer 17
-
$12,049 AUD
View
B
Retailer 18
-
$12,153 AUD
View
Retailer 19
-
$12,284 AUD
View
Price last confirmed 38 days ago
Retailer 20
-
$12,946 AUD
View
Price last confirmed 14 days ago
B
Retailer 21
-
$14,336 AUD
View
B
Retailer 22
-
$16,331 AUD
View
Most Expensive
NZ Jewellers
cc652f64-fa03-4faf-9ca2-97eb75db1b77 · Sep 28
$19,654 AUD
$13,504 USD
View
Price last confirmed 39 days ago
22 more retailers have this diamond
Prices start from $8,596 AUDSave up to $7,735 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.

B+
1.50ct Round
$8,596 AUD