Round|Natural|GIA

0.51ct K VS1 Round Natural Diamond

EX • K/VS1 • GIA 6545445321

Certificate GIA 6545445321

Diamond specifications and retailer prices

From £253 GBP
As of November 4, 2026
Save £1,063 GBP (81%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,316 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by GIA 6545445321. Listed at 17 retailers as of November 4, 2026, with prices from £253 to £1,316, a £1,063 spread on the same certified stone. NZ Jewellers lists it at £1,316. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
K
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6545445321
Dimensions5.14 × 5.12 × 3.17 mm
L/W Ratio1.00
Top View
5.14 mm5.12 mm0.51 ctK / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545445321
Side View
Table 59.0%Crown 33°Girdle: Sli. ThickPavilion 41.6°Culet: NDepth 61.7%

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: £1,316 GBP|Low: £253 GBP|High: £1,322 GBP|Avg: £499 GBP|-0.4%
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
Retailer 15
November 6, 2026
Retailer 12£253 GBP
Retailer 10£343 GBP
Retailer 6£361 GBP
Retailer 3£368 GBP
Retailer 7£369 GBP
Retailer 15£394 GBP
Retailer 11£419 GBP
Retailer 4£438 GBP
Retailer 8£438 GBP
Retailer 14£470 GBP
Retailer 9£491 GBP
Retailer 2£498 GBP
Retailer 5£529 GBP
Retailer 13£788 GBP
NZ Jewellers£1,316 GBP

28 data points across 15 retailers

17 retailers£253 GBP to £1,316 GBP

A
Cheapest Retailer
-
£253 GBP
A
Retailer 2
-
£294 GBP
View
Retailer 3
-
£297 GBP
View
Price last confirmed 12 days ago
A
Retailer 4
-
£343 GBP
View
Retailer 5
-
£361 GBP
View
Price last confirmed 10 days ago
A
Retailer 6
-
£368 GBP
View
Retailer 7
-
£369 GBP
View
Price last confirmed 8 days ago
A
Retailer 8
-
£394 GBP
View
A
Retailer 9
-
£419 GBP
View
B+
Retailer 10
-
£438 GBP
View
B+
Retailer 11
-
£438 GBP
View
B+
Retailer 12
-
£470 GBP
View
B+
Retailer 13
-
£491 GBP
View
B+
Retailer 14
-
£498 GBP
View
B+
Retailer 15
-
£529 GBP
View
B
Retailer 16
-
£788 GBP
View
Most Expensive
B
NZ Jewellers
63652d9c-1ccd-479f-967d-807cd90fb452 · Nov 4
£1,316 GBP
$1,771 USD
View
16 more retailers have this diamond
Prices start from £253 GBPSave up to £1,063 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
£253 GBP