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Round|Natural|GIA

0.51ct L SI2 Round Natural Diamond

EX • L/SI2 • GIA 6525636856

Certificate GIA 6525636856

Diamond specifications and retailer prices

From £166 GBP
As of November 6, 2026
Save £846 GBP (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,011 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 L colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6525636856. Listed at 13 retailers as of November 4, 2026, with prices from £166 to £1,011, a £846 spread on the same certified stone. NZ Jewellers lists it at £1,011. 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
L
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6525636856
Dimensions5.12 × 5.08 × 3.20 mm
L/W Ratio1.01
Key to symbols
Crystal
Top View
5.12 mm5.08 mm0.51 ctL / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6525636856
Side View
Table 57.0%Crown 36.5°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.7%

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: £1,011 GBP|Low: £166 GBP|High: £1,018 GBP|Avg: £344 GBP|+13.7%
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
November 6, 2026
Retailer 2£166 GBP
Retailer 5£199 GBP
Retailer 11£223 GBP
Retailer 4£249 GBP
Retailer 13£250 GBP
Retailer 8£281 GBP
Retailer 12£293 GBP
Retailer 10£300 GBP
Retailer 7£319 GBP
Retailer 3£377 GBP
Retailer 9£383 GBP
Retailer 6£441 GBP
NZ Jewellers£1,011 GBP

19 data points across 13 retailers

13 retailers£166 GBP to £1,011 GBP

A
Cheapest Retailer
-
£166 GBP
A
Retailer 2
-
£199 GBP
View
A
Retailer 3
-
£223 GBP
View
Retailer 4
-
£249 GBP
View
Price last confirmed 8 days ago
A
Retailer 5
-
£250 GBP
View
A
Retailer 6
-
£281 GBP
View
A
Retailer 7
-
£293 GBP
View
A
Retailer 8
-
£300 GBP
View
B+
Retailer 9
-
£319 GBP
View
B+
Retailer 10
-
£377 GBP
View
B+
Retailer 11
-
£383 GBP
View
B+
Retailer 12
-
£441 GBP
View
Most Expensive
C
NZ Jewellers
3b2466e1-a7bf-4887-844f-bb91cdcbcbbe · Nov 4
£1,011 GBP
$1,361 USD
View
12 more retailers have this diamond
Prices start from £166 GBPSave up to £846 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
£166 GBP