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 $255 USD
As of November 4, 2026
Save $900 USD (78%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,155 USD 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 $255 to $1,155, a $900 spread on the same certified stone. NZ Jewellers lists it at $1,155. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,155 USD|Low: $255 USD|High: $1,155 USD|Avg: $433 USD
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$255 USD
Retailer 9$260 USD
Retailer 4$266 USD
Retailer 14$275 USD
Retailer 12$284 USD
Retailer 13$343 USD
Retailer 7$361 USD
Retailer 3$385 USD
Retailer 8$397 USD
Retailer 6$435 USD
Retailer 2$494 USD
Retailer 11$522 USD
Retailer 10$588 USD
NZ Jewellers$1,155 USD

29 data points across 14 retailers

13 retailers$255 USD to $1,155 USD

A
Cheapest Retailer
-
$255 USD
A
Retailer 2
-
$260 USD
View
Retailer 3
-
$270 USD
View
Price last confirmed 43 days ago
Retailer 4
-
$275 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$284 USD
View
B+
Retailer 6
-
$343 USD
View
B+
Retailer 7
-
$361 USD
View
B+
Retailer 8
-
$385 USD
View
A
Retailer 9
-
$397 USD
View
B+
Retailer 10
-
$435 USD
View
B+
Retailer 11
-
$494 USD
View
B
Retailer 12
-
$588 USD
View
Most Expensive
C
NZ Jewellers
c8024f03-3694-47a2-beab-bb6651a5c213 · Nov 4
$1,155 USD
View
12 more retailers have this diamond
Prices start from $255 USDSave up to $900 USD

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
$255 USD