Round|Natural|GIA

0.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1453131886

Certificate GIA 1453131886

Diamond specifications and retailer prices

From £361 GBP
As of November 4, 2026
Save £473 GBP (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,385 GBP at NZ Jewellers · As of September 24, 2026
View at NZ Jewellers

About this 0.5ct natural round diamond

This 0.5ct natural round sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1453131886. Listed at 18 retailers as of November 2, 2026, with a 131% 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

0.50
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1453131886
Dimensions5.12 × 5.09 × 3.13 mm
L/W Ratio1.01
Key to symbols
Twinning Wisp
Top View
5.12 mm5.09 mm0.50 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1453131886
Side View
Table 57.0%Crown 34°Girdle: THN-STKPavilion 41°Culet: NoneDepth 61.2%

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 4
Current: £1,385 GBP|Low: £361 GBP|High: £1,385 GBP|Avg: £617 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10£361 GBP
Retailer 7£368 GBP
Retailer 3£376 GBP
Retailer 4£442 GBP
Retailer 2£464 GBP
Retailer 8£513 GBP
Retailer 5£540 GBP
Retailer 6£560 GBP
Retailer 9£834 GBP
NZ Jewellers£1,385 GBP

39 data points across 10 retailers

18 retailers£361 GBP to £834 GBP

A
Cheapest Retailer
-
£361 GBP
Retailer 2
-
£361 GBP
View
Price last confirmed 43 days ago
A
Retailer 3
-
£368 GBP
View
B+
Retailer 4
-
£376 GBP
View
B+
Retailer 5
-
£389 GBP
View
Retailer 6
-
£389 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£417 GBP
View
Retailer 8
-
£417 GBP
View
Price last confirmed 45 days ago
B+
Retailer 9
-
£442 GBP
View
B+
Retailer 10
-
£458 GBP
View
B+
Retailer 11
-
£464 GBP
View
B+
Retailer 12
-
£471 GBP
View
B
Retailer 13
-
£513 GBP
View
B
Retailer 14
-
£540 GBP
View
B+
Retailer 15
-
£560 GBP
View
B
Retailer 16
-
£834 GBP
View
Retailer 17
-
£1,385 GBP
View
Price under review
Most Expensive
NZ Jewellers
330fd32f-c173-494c-acba-a0e135a55120 · Sep 24
£1,385 GBP
$1,864 USD
View
Price under review
17 more retailers have this diamond
Prices start from £361 GBPSave up to £473 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
0.50ct Round
£361 GBP