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0.45ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 813687916

Shape and cutting style on the report: Round brilliant

Certificate IGI 813687916

Diamond specifications and retailer prices

From £124 GBP
As of November 6, 2026
Save £688 GBP (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £812 GBP 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 813687916. Listed at 14 retailers as of November 4, 2026, with prices from £124 to £812, a £688 spread on the same certified stone. NZ Jewellers lists it at £812. 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 angle33°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 813687916
Dimensions4.94 × 4.99 × 3.02 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
4.94 mm4.99 mm0.45 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 813687916
Side View
Table 62.0%Crown 33°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 60.9%

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: £812 GBP|Low: £124 GBP|High: £822 GBP|Avg: £298 GBP|-1.3%
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 6, 2026
Retailer 2£124 GBP
Retailer 5£179 GBP
Retailer 6£200 GBP
Retailer 12£201 GBP
Retailer 11£210 GBP
Retailer 3£231 GBP
Retailer 14£241 GBP
Retailer 10£259 GBP
Retailer 8£288 GBP
Retailer 9£308 GBP
Retailer 7£360 GBP
Retailer 4£406 GBP
Retailer 13£413 GBP
NZ Jewellers£812 GBP

23 data points across 14 retailers

14 retailers£124 GBP to £812 GBP

A
Cheapest Retailer
-
£124 GBP
A
Retailer 2
-
£179 GBP
View
A
Retailer 3
-
£200 GBP
View
A
Retailer 4
-
£201 GBP
View
A
Retailer 5
-
£210 GBP
View
A
Retailer 6
-
£231 GBP
View
A
Retailer 7
-
£241 GBP
View
B+
Retailer 8
-
£259 GBP
View
B+
Retailer 9
-
£288 GBP
View
A
Retailer 10
-
£308 GBP
View
B+
Retailer 11
-
£360 GBP
View
B
Retailer 12
-
£406 GBP
View
B+
Retailer 13
-
£413 GBP
View
Most Expensive
B
NZ Jewellers
ad866bcd-340a-4b6b-b2f6-6286ce64cc9e · Nov 4
£812 GBP
$1,093 USD
View
13 more retailers have this diamond
Prices start from £124 GBPSave up to £688 GBP

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
£124 GBP