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Round|Natural|GIA

0.51ct K IF Round Natural Diamond

EX • K/IF • GIA 2556318824

Certificate GIA 2556318824

Diamond specifications and retailer prices

From £397 GBP
As of November 6, 2026
Save £318 GBP (44%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £715 GBP at Frank Darling · As of November 6, 2026
View at Frank Darling

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 2556318824. Listed at 12 retailers as of November 6, 2026, with prices from £397 to £715, a £318 spread on the same certified stone. Frank Darling lists it at £715. 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 angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2556318824
Dimensions5.11 × 5.14 × 3.18 mm
L/W Ratio1.01
Culet sizeNone
Top View
5.11 mm5.14 mm0.51 ctK / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556318824
Side View
Table 57.0%Crown 36°Girdle: THN-STKPavilion 41°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: £715 GBP|Low: £397 GBP|High: £739 GBP|Avg: £537 GBP|-3.2%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3£397 GBP
Retailer 5£411 GBP
Retailer 9£433 GBP
Retailer 4£462 GBP
Retailer 10£517 GBP
Retailer 11£557 GBP
Retailer 6£559 GBP
Retailer 7£571 GBP
Retailer 2£584 GBP
Retailer 8£597 GBP
Frank Darling£715 GBP

34 data points across 11 retailers

12 retailers£397 GBP to £715 GBP

A
Cheapest Retailer
-
£397 GBP
A
Retailer 2
-
£411 GBP
View
A
Retailer 3
-
£433 GBP
View
A
Retailer 4
-
£462 GBP
View
B+
Retailer 5
-
£504 GBP
View
B+
Retailer 6
-
£517 GBP
View
B+
Retailer 7
-
£557 GBP
View
B+
Retailer 8
-
£559 GBP
View
B+
Retailer 9
-
£571 GBP
View
B+
Retailer 10
-
£584 GBP
View
B+
Retailer 11
-
£597 GBP
View
Most Expensive
B+
Frank Darling
2645387HK · Nov 6
£715 GBP
$963 USD
View
11 more retailers have this diamond
Prices start from £397 GBPSave up to £318 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
£397 GBP