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Oval|Natural|GIA

0.51ct I SI2 Oval Natural Diamond

GD • I/SI2 • GIA 6501279124

Certificate GIA 6501279124

Diamond specifications and retailer prices

From £492 GBP
$659 USD
As of October 31, 2026
Save £678 GBP (58%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,170 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6501279124. Listed at 23 retailers as of October 29, 2026, with prices from £492 to £1,170, a £678 spread on the same certified stone. MOH London lists it at £1,170. 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
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6501279124
Dimensions6.67 × 4.44 × 2.74 mm
L/W Ratio1.50
Top View
6.67 mm4.44 mm0.51 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6501279124
Side View
Table 65.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 61.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £1,170 GBP|Low: £447 GBP|High: £1,177 GBP|Avg: £775 GBP|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 5£492 GBP
Retailer 4£575 GBP
Retailer 6£593 GBP
Retailer 8£730 GBP
Retailer 2£765 GBP
Retailer 7£887 GBP
Retailer 3£897 GBP
Retailer 9£955 GBP
MOH London£1,170 GBP

41 data points across 9 retailers

23 retailers£492 GBP to £1,170 GBP

B+
Cheapest Retailer
-
£492 GBP
$659 USD
Final sale: no returns
B
Retailer 2
-
£530 GBP
$709 USD
View
B
Retailer 3
-
£575 GBP
$770 USD
View
B
Retailer 4
-
£575 GBP
$771 USD
View
B
Retailer 5
-
£575 GBP
$771 USD
View
B
Retailer 6
-
£579 GBP
$776 USD
View
B
Retailer 7
-
£584 GBP
$782 USD
View
B
Retailer 8
-
£593 GBP
$794 USD
View
B
Retailer 9
-
£597 GBP
$800 USD
View
B
Retailer 10
-
£663 GBP
$889 USD
View
B
Retailer 11
-
£709 GBP
$950 USD
View
B
Retailer 12
-
£709 GBP
$950 USD
View
B
Retailer 13
-
£710 GBP
$951 USD
View
B
Retailer 14
-
£730 GBP
$978 USD
View
B
Retailer 15
-
£731 GBP
$980 USD
View
B
Retailer 16
-
£765 GBP
View
C
Retailer 17
-
£779 GBP
$1,044 USD
View
C
Retailer 18
-
£887 GBP
A$1,828 AUD
View
C
Retailer 19
-
£893 GBP
$1,196 USD
View
C
Retailer 20
-
£897 GBP
€1,145 EUR
View
C
Retailer 21
-
£1,022 GBP
CA$1,903 CAD
View
Most Expensive
C
MOH London
E1ED5DAB9 · Oct 29
£1,170 GBP
View
21 more retailers have this diamond
Prices start from £492 GBPSave up to £678 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.

B+
0.51ct Oval
£492 GBP