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Round|Natural|GIA

0.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2564538320

Certificate GIA 2564538320

Diamond specifications and retailer prices

From £293 GBP
As of November 5, 2026
Save £903 GBP (76%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,195 GBP at NZ Jewellers · As of November 4, 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 2564538320. Listed at 17 retailers as of November 4, 2026, with prices from £293 to £1,195, a £903 spread on the same certified stone. NZ Jewellers lists it at £1,195. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2564538320
Dimensions5.15 × 5.11 × 3.13 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather
Top View
5.15 mm5.11 mm0.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2564538320
Side View
Table 60.0%Crown 34°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.0%

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 5
Current: £1,195 GBP|Low: £293 GBP|High: £1,195 GBP|Avg: £535 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 7£293 GBP
Retailer 9£368 GBP
Retailer 3£381 GBP
Retailer 11£410 GBP
Retailer 12£410 GBP
Retailer 4£440 GBP
Retailer 5£470 GBP
Retailer 2£490 GBP
Retailer 6£566 GBP
Retailer 8£591 GBP
Retailer 10£880 GBP
NZ Jewellers£1,195 GBP

26 data points across 12 retailers

17 retailers£293 GBP to £1,195 GBP

A
Cheapest Retailer
-
£293 GBP
A
Retailer 2
-
£323 GBP
View
A
Retailer 3
-
£342 GBP
View
A
Retailer 4
-
£368 GBP
View
A
Retailer 5
-
£381 GBP
View
B+
Retailer 6
-
£410 GBP
View
Retailer 7
-
£410 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£440 GBP
View
B+
Retailer 9
-
£470 GBP
View
B+
Retailer 10
-
£478 GBP
View
B+
Retailer 11
-
£487 GBP
View
B+
Retailer 12
-
£490 GBP
View
B
Retailer 13
-
£531 GBP
View
B+
Retailer 14
-
£566 GBP
View
B
Retailer 15
-
£591 GBP
View
B
Retailer 16
-
£880 GBP
View
Most Expensive
B
NZ Jewellers
4b735c9f-ad37-46e8-926f-56435415096d · Nov 4
£1,195 GBP
$1,609 USD
View
16 more retailers have this diamond
Prices start from £293 GBPSave up to £903 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
£293 GBP