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Oval|Natural|HRD

0.51ct H SI2 Oval Natural Diamond

VG • H/SI2 • HRD 260000137700

Certificate HRD 260000137700

Diamond specifications and retailer prices

From £295 GBP
As of November 6, 2026
Save £923 GBP (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,218 GBP at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by HRD 260000137700. Listed at 11 retailers as of November 2, 2026, with prices from £295 to £1,218, a £923 spread on the same certified stone. NZ Jewellers lists it at £1,218. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
H
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabHRD
CertificateHRD 260000137700
Dimensions6.65 × 4.27 × 2.70 mm
L/W Ratio1.56
Top View
6.65 mm4.27 mm0.51 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateHRD 260000137700
Side View
Table 58.0%CrownGirdle: FAC-FACPavilionCulet: NoneDepth 63.1%

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: £1,218 GBP|Low: £268 GBP|High: £1,218 GBP|Avg: £525 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 4£295 GBP
Retailer 9£342 GBP
Retailer 8£367 GBP
Retailer 3£400 GBP
Retailer 2£418 GBP
Retailer 7£428 GBP
Retailer 6£524 GBP
Retailer 5£732 GBP
NZ Jewellers£1,218 GBP

23 data points across 9 retailers

11 retailers£295 GBP to £1,218 GBP

A
Cheapest Retailer
-
£295 GBP
Final sale: no returns
B+
Retailer 2
-
£318 GBP
View
B+
Retailer 3
-
£342 GBP
View
Retailer 4
-
£342 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£367 GBP
View
B+
Retailer 6
-
£400 GBP
View
B+
Retailer 7
-
£418 GBP
View
B+
Retailer 8
-
£428 GBP
View
B+
Retailer 9
-
£524 GBP
View
B
Retailer 10
-
£732 GBP
View
Most Expensive
C
NZ Jewellers
621758be-e3bb-414b-abab-1a2cf5f3335f · Nov 2
£1,218 GBP
$1,630 USD
View
10 more retailers have this diamond
Prices start from £295 GBPSave up to £923 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 Oval
£295 GBP