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Round|Natural|GIA

0.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6482247427

Certificate GIA 6482247427

Diamond specifications and retailer prices

From £233 GBP
As of November 5, 2026
Save £992 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,224 GBP at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6482247427. Listed at 10 retailers as of November 4, 2026, with prices from £233 to £1,224, a £992 spread on the same certified stone. NZ Jewellers lists it at £1,224. 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

0.51
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6482247427
Dimensions5.10 × 5.13 × 3.19 mm
L/W Ratio1.01
Star length50%
Top View
5.10 mm5.13 mm0.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6482247427
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.4%

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: £1,224 GBP|Low: £233 GBP|High: £1,224 GBP|Avg: £497 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 4£233 GBP
Retailer 6£310 GBP
Retailer 9£319 GBP
Retailer 7£344 GBP
Retailer 8£344 GBP
Retailer 10£369 GBP
Retailer 2£390 GBP
Retailer 3£513 GBP
Retailer 5£736 GBP
NZ Jewellers£1,224 GBP

40 data points across 10 retailers

10 retailers£233 GBP to £1,224 GBP

A
Cheapest Retailer
-
£233 GBP
A
Retailer 2
-
£310 GBP
View
A
Retailer 3
-
£319 GBP
View
Retailer 4
-
£344 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£344 GBP
View
B+
Retailer 6
-
£369 GBP
View
B+
Retailer 7
-
£390 GBP
View
B+
Retailer 8
-
£513 GBP
View
B
Retailer 9
-
£736 GBP
View
Most Expensive
C
NZ Jewellers
e864780e-869e-4f09-b5b9-8bd65a40d5b6 · Nov 4
£1,224 GBP
$1,648 USD
View
9 more retailers have this diamond
Prices start from £233 GBPSave up to £992 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
0.51ct Round
£233 GBP