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Round|Natural|GIA

0.45ct K SI1 Round Natural Diamond

VG • K/SI1 • GIA 6455989630

Certificate GIA 6455989630

Diamond specifications and retailer prices

From $290 AUD
As of November 6, 2026
Save $643 AUD (69%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,713 AUD at NZ Jewellers · As of September 28, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 6455989630. Listed at 17 retailers as of November 4, 2026, with a 222% 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
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6455989630
Dimensions4.82 × 4.80 × 3.10 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
4.82 mm4.80 mm0.45 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6455989630
Side View
Table 58.0%Crown 35.5°Girdle: STK-THKPavilion 41.8°Culet: NoneDepth 64.4%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $473 AUD|Low: $290 AUD|High: $977 AUD|Avg: $569 AUD|-4.1%
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 6$290 AUD
Retailer 11$317 AUD
Retailer 5$354 AUD
Retailer 7$441 AUD
Retailer 1$473 AUD
Retailer 3$483 AUD
Retailer 10$506 AUD
Retailer 9$563 AUD
Retailer 13$594 AUD
Retailer 12$630 AUD
Retailer 8$699 AUD
Retailer 4$735 AUD
Retailer 2$933 AUD

25 data points across 13 retailers

17 retailers$290 AUD to $933 AUD

A
Cheapest Retailer
-
$290 AUD
A
Retailer 2
-
$317 AUD
View
A
Retailer 3
-
$354 AUD
View
A
Retailer 4
-
$441 AUD
View
A
Retailer 5
-
$473 AUD
View
A
Retailer 6
-
$483 AUD
View
Retailer 7
-
$492 AUD
View
Price last confirmed 51 days ago
Retailer 8
-
$498 AUD
View
Price last confirmed 38 days ago
A
Retailer 9
-
$506 AUD
View
A
Retailer 10
-
$563 AUD
View
A
Retailer 11
-
$594 AUD
View
Retailer 12
-
$601 AUD
View
Price last confirmed 38 days ago
B+
Retailer 13
-
$630 AUD
View
B+
Retailer 14
-
$699 AUD
View
B+
Retailer 15
-
$735 AUD
View
B
Retailer 16
-
$933 AUD
View
Most Expensive
NZ Jewellers
1c342dd8-52b5-4a13-91a1-827523fefde5 · Sep 28
$1,713 AUD
$1,177 USD
View
Price last confirmed 39 days ago
16 more retailers have this diamond
Prices start from $290 AUDSave up to $643 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
$290 AUD