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Round|Natural|GIA

0.45ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2468181965

Certificate GIA 2468181965

Diamond specifications and retailer prices

From £172 GBP
As of November 6, 2026
Save £392 GBP (70%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,014 GBP 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 top-tier cut grade and certified by GIA 2468181965. Listed at 16 retailers as of November 1, 2026, with a 229% 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2468181965
Dimensions4.90 × 4.86 × 3.07 mm
L/W Ratio1.01
Key to symbols
Feather, Twinning Wisp
Top View
4.90 mm4.86 mm0.45 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2468181965
Side View
Table 55.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NDepth 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 6
Current: £172 GBP|Low: £172 GBP|High: £583 GBP|Avg: £333 GBP|-6.9%
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 1£172 GBP
Retailer 12£185 GBP
Retailer 3£209 GBP
Retailer 13£229 GBP
Retailer 7£256 GBP
Retailer 4£279 GBP
Retailer 8£300 GBP
Retailer 10£320 GBP
Retailer 6£334 GBP
Retailer 2£369 GBP
Retailer 9£401 GBP
Retailer 11£401 GBP
Retailer 5£564 GBP

23 data points across 13 retailers

16 retailers£172 GBP to £564 GBP

A
Cheapest Retailer
-
£172 GBP
A
Retailer 2
-
£185 GBP
View
A
Retailer 3
-
£209 GBP
View
A
Retailer 4
-
£229 GBP
View
A
Retailer 5
-
£256 GBP
View
A
Retailer 6
-
£279 GBP
View
Retailer 7
-
£295 GBP
View
Price last confirmed 38 days ago
A
Retailer 8
-
£300 GBP
View
A
Retailer 9
-
£320 GBP
View
B+
Retailer 10
-
£334 GBP
View
Retailer 11
-
£356 GBP
View
Price last confirmed 38 days ago
B+
Retailer 12
-
£369 GBP
View
B+
Retailer 13
-
£401 GBP
View
B+
Retailer 14
-
£401 GBP
View
B
Retailer 15
-
£564 GBP
View
Most Expensive
NZ Jewellers
06052c80-4d99-45f9-b35b-e860b868b288 · Sep 28
£1,014 GBP
$1,365 USD
View
Price last confirmed 39 days ago
15 more retailers have this diamond
Prices start from £172 GBPSave up to £392 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
£172 GBP