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Round|Natural|GIA

0.51ct H FL Round Natural Diamond

EX • H/FL • GIA 5543768504

Certificate GIA 5543768504

Diamond specifications and retailer prices

From £740 GBP
As of November 4, 2026
Save £1,216 GBP (62%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,956 GBP at NZ Jewellers · As of October 30, 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 H colour (near-colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 5543768504. Listed at 7 retailers as of October 30, 2026, with prices from £740 to £1,956, a £1,216 spread on the same certified stone. NZ Jewellers lists it at £1,956. 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
H
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 5543768504
Dimensions5.07 × 5.09 × 3.20 mm
L/W Ratio1.00
Star length50%
Top View
5.07 mm5.09 mm0.51 ctH / FL
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5543768504
Side View
Table 57.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £1,956 GBP|Low: £574 GBP|High: £1,956 GBP|Avg: £1,283 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 5£740 GBP
Retailer 3£945 GBP
Retailer 2£1,042 GBP
Retailer 4£1,466 GBP
Retailer 6£1,614 GBP
NZ Jewellers£1,956 GBP

31 data points across 6 retailers

7 retailers£740 GBP to £1,956 GBP

B+
Cheapest Retailer
-
£740 GBP
Final sale: no returns
B+
Retailer 2
-
£945 GBP
View
B+
Retailer 3
-
£1,042 GBP
View
B
Retailer 4
-
£1,090 GBP
View
B
Retailer 5
-
£1,466 GBP
View
B
Retailer 6
-
£1,614 GBP
View
Most Expensive
B
NZ Jewellers
c94d4c3b-b790-43d9-bd1c-3a3227266cfc · Oct 30
£1,956 GBP
$2,640 USD
View
6 more retailers have this diamond
Prices start from £740 GBPSave up to £1,216 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.

B+
0.51ct Round
£740 GBP