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Round|Natural|IGI

0.45ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 800674294

Shape and cutting style on the report: Round brilliant

Certificate IGI 800674294

Diamond specifications and retailer prices

From $371 AUD
As of November 4, 2026
Save $1,310 AUD (78%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,681 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 800674294. Listed at 13 retailers as of November 4, 2026, with prices from $371 to $1,681, a $1,310 spread on the same certified stone. NZ Jewellers lists it at $1,681. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.7°
OriginNatural
Grading LabIGI
CertificateIGI 800674294
Dimensions4.88 × 4.91 × 3.08 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
4.88 mm4.91 mm0.45 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 800674294
Side View
Table 57.0%Crown 34°Girdle: MediumPavilion 41.7°Culet: NoneDepth 62.9%

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 4
Current: $1,681 AUD|Low: $371 AUD|High: $1,681 AUD|Avg: $630 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
November 5, 2026
Retailer 5$371 AUD
Retailer 9$378 AUD
Retailer 4$387 AUD
Retailer 14$400 AUD
Retailer 12$413 AUD
Retailer 13$499 AUD
Retailer 7$525 AUD
Retailer 3$560 AUD
Retailer 8$578 AUD
Retailer 6$633 AUD
Retailer 2$719 AUD
Retailer 11$760 AUD
Retailer 10$856 AUD
NZ Jewellers$1,681 AUD

29 data points across 14 retailers

13 retailers$371 AUD to $1,681 AUD

A
Cheapest Retailer
-
$371 AUD
A
Retailer 2
-
$378 AUD
View
Retailer 3
-
$393 AUD
View
Price last confirmed 43 days ago
Retailer 4
-
$400 AUD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$413 AUD
View
B+
Retailer 6
-
$499 AUD
View
B+
Retailer 7
-
$525 AUD
View
B+
Retailer 8
-
$560 AUD
View
A
Retailer 9
-
$578 AUD
View
B+
Retailer 10
-
$633 AUD
View
B+
Retailer 11
-
$719 AUD
View
B
Retailer 12
-
$856 AUD
View
Most Expensive
C
NZ Jewellers
c8024f03-3694-47a2-beab-bb6651a5c213 · Nov 4
$1,681 AUD
$1,155 USD
View
12 more retailers have this diamond
Prices start from $371 AUDSave up to $1,310 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
$371 AUD