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Round|Natural|GIA

0.45ct D SI1 Round Natural Diamond

VG • D/SI1 • GIA 2537421805

Certificate GIA 2537421805

Diamond specifications and retailer prices

From $447 AUD
As of November 6, 2026
Save $937 AUD (68%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,590 AUD at NZ Jewellers · As of October 2, 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 D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 2537421805. Listed at 19 retailers as of November 4, 2026, with a 210% 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

0.45
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
Crown angle38.5°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 2537421805
Dimensions4.80 × 4.74 × 3.08 mm
L/W Ratio1.01
Top View
4.80 mm4.74 mm0.45 ctD / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2537421805
Side View
Table 56.0%Crown 38.5°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 64.5%

Caratlytics Score

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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: $447 AUD|Low: $447 AUD|High: $1,454 AUD|Avg: $845 AUD|-4.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 1$447 AUD
Retailer 5$530 AUD
Retailer 3$644 AUD
Retailer 7$653 AUD
Retailer 13$674 AUD
Retailer 8$731 AUD
Retailer 10$780 AUD
Retailer 2$900 AUD
Retailer 4$930 AUD
Retailer 11$934 AUD
Retailer 9$1,003 AUD
Retailer 6$1,207 AUD
Retailer 12$1,384 AUD

19 data points across 13 retailers

19 retailers$447 AUD to $1,384 AUD

A
Cheapest Retailer
-
$447 AUD
A
Retailer 2
-
$530 AUD
View
A
Retailer 3
-
$644 AUD
View
A
Retailer 4
-
$653 AUD
View
A
Retailer 5
-
$674 AUD
View
Retailer 6
-
$676 AUD
View
Price last confirmed 34 days ago
Retailer 7
-
$706 AUD
View
Price last confirmed 51 days ago
A
Retailer 8
-
$731 AUD
View
Retailer 9
-
$737 AUD
View
Price last confirmed 38 days ago
Retailer 10
-
$780 AUD
View
Price last confirmed 35 days ago
A
Retailer 11
-
$780 AUD
View
B+
Retailer 12
-
$900 AUD
View
B+
Retailer 13
-
$930 AUD
View
B+
Retailer 14
-
$934 AUD
View
B+
Retailer 15
-
$1,003 AUD
View
Retailer 16
-
$1,081 AUD
View
Price last confirmed 34 days ago
B+
Retailer 17
-
$1,207 AUD
View
B+
Retailer 18
-
$1,384 AUD
View
Most Expensive
NZ Jewellers
37d139f2-f725-4e14-a015-d6a34da3ca37 · Oct 2
$2,590 AUD
$1,813 USD
View
Price last confirmed 34 days ago
18 more retailers have this diamond
Prices start from $447 AUDSave up to $937 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
$447 AUD