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Round|Natural|GIA

0.45ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 2506677139

Certificate GIA 2506677139

Diamond specifications and retailer prices

From $433 AUD
₹28,976 INR
As of October 30, 2026
Save $1,866 AUD (81%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $2,355 AUD at NZ Jewellers · As of September 24, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2506677139. Listed at 24 retailers as of October 29, 2026, with a 431% 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

0.45
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2506677139
Dimensions4.91 × 4.85 × 3.07 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
4.91 mm4.85 mm0.45 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2506677139
Side View
Table 57.0%Crown 36.5°Girdle: THN-STKPavilion 41°Culet: NoneDepth 62.9%

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: Oct 30
Current: $2,299 AUD|Low: $433 AUD|High: $2,299 AUD|Avg: $840 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
October 30, 2026
Retailer 2$433 AUD
Retailer 5$510 AUD
Retailer 4$619 AUD
Retailer 13$624 AUD
Retailer 6$636 AUD
Retailer 10$646 AUD
Retailer 14$649 AUD
Retailer 8$739 AUD
Retailer 9$750 AUD
Retailer 12$814 AUD
Retailer 3$837 AUD
Retailer 7$972 AUD
Retailer 11$1,392 AUD
NZ Jewellers$2,299 AUD

35 data points across 14 retailers

24 retailers$433 AUD to $2,299 AUD

A
Cheapest Retailer
-
$433 AUD
₹28,976 INR
A
Retailer 2
-
$510 AUD
HK$2,800 HKD
View
A
Retailer 3
-
$614 AUD
$431 USD
View
Retailer 4
-
$614 AUD
$431 USD
View
Price last confirmed 23 days ago
A
Retailer 5
-
$619 AUD
$435 USD
View
A
Retailer 6
-
$624 AUD
View
A
Retailer 7
-
$636 AUD
SGD 604 SGD
View
A
Retailer 8
-
$646 AUD
$454 USD
View
A
Retailer 9
-
$649 AUD
$456 USD
View
Retailer 10
-
$662 AUD
$465 USD
View
Price last confirmed 8 days ago
A
Retailer 11
-
$662 AUD
$465 USD
View
A
Retailer 12
-
$662 AUD
$465 USD
View
Retailer 13
-
$662 AUD
$465 USD
View
Price last confirmed 31 days ago
Retailer 14
-
$709 AUD
$498 USD
View
Price last confirmed 12 days ago
Retailer 15
-
$709 AUD
$498 USD
View
Price last confirmed 21 days ago
A
Retailer 16
-
$739 AUD
£409 GBP
View
A
Retailer 17
-
$750 AUD
£415 GBP
View
A
Retailer 18
-
$814 AUD
$572 USD
View
A
Retailer 19
-
$837 AUD
$588 USD
View
B+
Retailer 20
-
$972 AUD
€650 EUR
View
B+
Retailer 21
-
$1,392 AUD
£770 GBP
View
B
Retailer 22
-
$1,496 AUD
£828 GBP
View
B
Retailer 23
-
$2,299 AUD
$1,615 USD
View
Most Expensive
NZ Jewellers
5b5168c3-27cd-4eb1-8ddd-221a5709e101 · Sep 24
$2,355 AUD
$1,654 USD
View
Price last confirmed 36 days ago
23 more retailers have this diamond
Prices start from $433 AUDSave up to $1,866 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
$433 AUD