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Round|Natural|GIA

0.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2567223287

Certificate GIA 2567223287

Diamond specifications and retailer prices

From £282 GBP
As of November 6, 2026
Save £929 GBP (77%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,210 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2567223287. Listed at 16 retailers as of November 4, 2026, with prices from £282 to £1,210, a £929 spread on the same certified stone. NZ Jewellers lists it at £1,210. 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
FluorescenceMedium
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2567223287
Dimensions5.11 × 5.13 × 3.13 mm
L/W Ratio1.00
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal
Top View
5.11 mm5.13 mm0.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2567223287
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.1%

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: £1,210 GBP|Low: £282 GBP|High: £1,251 GBP|Avg: £517 GBP|-3.3%
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 2£282 GBP
Retailer 15£323 GBP
Retailer 5£356 GBP
Retailer 6£386 GBP
Retailer 9£401 GBP
Retailer 7£409 GBP
Retailer 14£415 GBP
Retailer 4£445 GBP
Retailer 10£445 GBP
Retailer 13£476 GBP
Retailer 11£486 GBP
Retailer 8£496 GBP
Retailer 12£518 GBP
Retailer 3£889 GBP
NZ Jewellers£1,210 GBP

32 data points across 15 retailers

16 retailers£282 GBP to £1,210 GBP

A
Cheapest Retailer
-
£282 GBP
A
Retailer 2
-
£323 GBP
View
A
Retailer 3
-
£356 GBP
View
Final sale: no returns
A
Retailer 4
-
£386 GBP
View
A
Retailer 5
-
£401 GBP
View
A
Retailer 6
-
£409 GBP
View
A
Retailer 7
-
£415 GBP
View
A
Retailer 8
-
£445 GBP
View
A
Retailer 9
-
£445 GBP
View
A
Retailer 10
-
£476 GBP
View
A
Retailer 11
-
£486 GBP
View
A
Retailer 12
-
£496 GBP
View
B+
Retailer 13
-
£503 GBP
View
B+
Retailer 14
-
£518 GBP
View
B
Retailer 15
-
£889 GBP
View
Most Expensive
B
NZ Jewellers
cb82a508-45f8-47d3-b045-88e028bda487 · Nov 4
£1,210 GBP
$1,629 USD
View
15 more retailers have this diamond
Prices start from £282 GBPSave up to £929 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
£282 GBP