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0.51ct L SI2 Round Natural Diamond

EX • L/SI2 • GIA 1327713376

Certificate GIA 1327713376

Diamond specifications and retailer prices

From £259 GBP
As of November 2, 2026
Save £733 GBP (74%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £992 GBP at NZ Jewellers · As of November 2, 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 1327713376. Listed at 12 retailers as of November 2, 2026, with prices from £259 to £992, a £733 spread on the same certified stone. NZ Jewellers lists it at £992. 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
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1327713376
Dimensions5.11 × 5.13 × 3.17 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Culet sizeNone
Top View
5.11 mm5.13 mm0.51 ctL / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1327713376
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.8%

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 2
Current: £330 GBP|Low: £277 GBP|High: £478 GBP|Avg: £364 GBP|+5.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 3£279 GBP
Retailer 4£279 GBP
Retailer 1£330 GBP
Retailer 5£331 GBP
Retailer 6£457 GBP
Retailer 2£476 GBP

43 data points across 6 retailers

12 retailers£259 GBP to £992 GBP

Retailer 1
-
£259 GBP
Price last confirmed 28 days ago
A
Retailer 2
-
£259 GBP
View
Retailer 3
-
£279 GBP
View
Price last confirmed 8 days ago
Retailer 4
-
£288 GBP
View
Price last confirmed 38 days ago
B+
Retailer 5
-
£330 GBP
View
B+
Retailer 6
-
£331 GBP
View
Retailer 7
-
£348 GBP
View
Price last confirmed 28 days ago
B+
Retailer 8
-
£348 GBP
View
B+
Retailer 9
-
£355 GBP
View
B
Retailer 10
-
£476 GBP
View
Retailer 11
-
£992 GBP
View
Price last confirmed 43 days ago
Most Expensive
C
NZ Jewellers
4c06adae-2ca7-458b-854e-d7c9b1e2b7ca · Nov 2
£992 GBP
$1,335 USD
View
11 more retailers have this diamond
Prices start from £259 GBPSave up to £733 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
£259 GBP