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Round|Natural|GIA

0.51ct K IF Round Natural Diamond

EX • K/IF • GIA 6555679412

Certificate GIA 6555679412

Diamond specifications and retailer prices

From £333 GBP
As of November 6, 2026
Save £573 GBP (63%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,367 GBP at NZ Jewellers · As of September 28, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 6555679412. Listed at 13 retailers as of November 4, 2026, with a 172% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
K
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6555679412
Dimensions5.11 × 5.08 × 3.16 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
5.11 mm5.08 mm0.51 ctK / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555679412
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.1%

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: £414 GBP|Low: £333 GBP|High: £1,019 GBP|Avg: £541 GBP|-6.2%
Retailer 1
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 2£333 GBP
Retailer 11£363 GBP
Retailer 12£371 GBP
Retailer 1£414 GBP
Retailer 5£485 GBP
Retailer 6£490 GBP
Retailer 9£524 GBP
Retailer 3£571 GBP
Retailer 10£584 GBP
Retailer 4£587 GBP
Retailer 7£609 GBP
Retailer 8£906 GBP

38 data points across 12 retailers

13 retailers£333 GBP to £906 GBP

A
Cheapest Retailer
-
£333 GBP
A
Retailer 2
-
£363 GBP
View
Final sale: no returns
A
Retailer 3
-
£371 GBP
View
A
Retailer 4
-
£414 GBP
View
B+
Retailer 5
-
£485 GBP
View
A
Retailer 6
-
£490 GBP
View
B+
Retailer 7
-
£524 GBP
View
B+
Retailer 8
-
£571 GBP
View
B+
Retailer 9
-
£584 GBP
View
B+
Retailer 10
-
£609 GBP
View
B
Retailer 11
-
£906 GBP
View
Retailer 12
-
£1,354 GBP
View
Price last confirmed 31 days ago
Most Expensive
NZ Jewellers
03587995-2e7b-44ba-a300-74f9a7f87434 · Sep 28
£1,367 GBP
$1,840 USD
View
Price last confirmed 39 days ago
12 more retailers have this diamond
Prices start from £333 GBPSave up to £573 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
£333 GBP