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Round|Natural|GIA

0.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6562618778

Certificate GIA 6562618778

Diamond specifications and retailer prices

From £271 GBP
As of November 6, 2026
Save £781 GBP (74%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,052 GBP at Diamond Exchange Canada · As of November 5, 2026
View at Diamond Exchange Canada

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6562618778. Listed at 10 retailers as of November 5, 2026, with prices from £271 to £1,052, a £781 spread on the same certified stone. Diamond Exchange Canada lists it at £1,052. 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6562618778
Dimensions5.18 × 5.20 × 3.12 mm
L/W Ratio1.00
Top View
5.18 mm5.20 mm0.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6562618778
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,052 GBP|Low: £271 GBP|High: £1,103 GBP|Avg: £493 GBP|-4.6%
Diamond Exchange Canada
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2£271 GBP
Retailer 8£314 GBP
Retailer 10£314 GBP
Retailer 6£334 GBP
Retailer 7£338 GBP
Retailer 3£388 GBP
Retailer 5£502 GBP
Retailer 9£510 GBP
Retailer 4£591 GBP
Diamond Exchange Canada£1,052 GBP

24 data points across 10 retailers

10 retailers£271 GBP to £1,052 GBP

A
Cheapest Retailer
-
£271 GBP
A
Retailer 2
-
£314 GBP
View
A
Retailer 3
-
£314 GBP
View
A
Retailer 4
-
£334 GBP
View
A
Retailer 5
-
£338 GBP
View
A
Retailer 6
-
£388 GBP
View
A
Retailer 7
-
£502 GBP
View
B+
Retailer 8
-
£510 GBP
View
B+
Retailer 9
-
£591 GBP
View
Most Expensive
B
Diamond Exchange Canada
1992904917 · Nov 5
£1,052 GBP
CA$1,967 CAD
View
9 more retailers have this diamond
Prices start from £271 GBPSave up to £781 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
£271 GBP