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Round|Natural|GIA

0.45ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1539173361

Certificate GIA 1539173361

Diamond specifications and retailer prices

From $685 AUD
As of November 6, 2026
Save $1,872 AUD (73%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,557 AUD at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.45ct natural round diamond

This 0.45ct natural round sits in the sub-half-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1539173361. Listed at 17 retailers as of November 4, 2026, with prices from $685 to $2,557, a $1,872 spread on the same certified stone. NZ Jewellers lists it at $2,557. 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

0.45
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1539173361
Dimensions4.91 × 4.93 × 3.05 mm
L/W Ratio1.00
Culet sizeNone
Top View
4.91 mm4.93 mm0.45 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1539173361
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.9%

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: $892 AUD|Low: $844 AUD|High: $1,905 AUD|Avg: $1,196 AUD|+4.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$892 AUD
Retailer 7$910 AUD
Retailer 5$1,033 AUD
Retailer 2$1,204 AUD
Retailer 6$1,225 AUD
Retailer 4$1,263 AUD
Retailer 3$1,880 AUD

44 data points across 7 retailers

17 retailers$685 AUD to $2,557 AUD

A
Cheapest Retailer
-
$685 AUD
A
Retailer 2
-
$739 AUD
View
A
Retailer 3
-
$768 AUD
View
Retailer 4
-
$796 AUD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$796 AUD
View
B+
Retailer 6
-
$853 AUD
View
B+
Retailer 7
-
$892 AUD
View
B+
Retailer 8
-
$905 AUD
View
B+
Retailer 9
-
$917 AUD
View
B+
Retailer 10
-
$917 AUD
View
B+
Retailer 11
-
$946 AUD
View
B
Retailer 12
-
$1,033 AUD
View
B+
Retailer 13
-
$1,204 AUD
View
Retailer 14
-
$1,225 AUD
View
Price last confirmed 33 days ago
B
Retailer 15
-
$1,263 AUD
View
B
Retailer 16
-
$1,880 AUD
View
Most Expensive
B
NZ Jewellers
160f74b9-cc40-462d-ab1a-a4f7c15d4546 · Nov 4
$2,557 AUD
$1,757 USD
View
16 more retailers have this diamond
Prices start from $685 AUDSave up to $1,872 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
0.45ct Round
$685 AUD