Oval|Natural|GIA

0.51ct I SI2 Oval Natural Diamond

GD • I/SI2 • GIA 6501279124

Certificate GIA 6501279124

Diamond specifications and retailer prices

From $659 USD
As of October 29, 2026
Save $908 USD (58%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $1,567 USD 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 $659 to $1,567, a $908 spread on the same certified stone. MOH London lists it at $1,567. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,567 USD|Low: $599 USD|High: $1,577 USD|Avg: $1,036 USD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 5$659 USD
Retailer 4$770 USD
Retailer 6$794 USD
Retailer 8$978 USD
Retailer 2$1,025 USD
Retailer 7$1,188 USD
Retailer 3$1,199 USD
Retailer 9$1,280 USD
MOH London$1,567 USD

40 data points across 9 retailers

23 retailers$659 USD to $1,567 USD

B+
Cheapest Retailer
-
$659 USD
Final sale: no returns
B
Retailer 2
-
$709 USD
View
B
Retailer 3
-
$770 USD
View
B
Retailer 4
-
$771 USD
View
B
Retailer 5
-
$771 USD
View
B
Retailer 6
-
$776 USD
View
B
Retailer 7
-
$782 USD
View
B
Retailer 8
-
$794 USD
View
B
Retailer 9
-
$800 USD
View
B
Retailer 10
-
$889 USD
View
B
Retailer 11
-
$950 USD
View
B
Retailer 12
-
$950 USD
View
B
Retailer 13
-
$951 USD
View
B
Retailer 14
-
$978 USD
View
B
Retailer 15
-
$980 USD
View
C
Retailer 16
-
$1,025 USD
£807 GBP
View
C
Retailer 17
-
$1,044 USD
View
C
Retailer 18
-
$1,188 USD
A$1,828 AUD
View
C
Retailer 19
-
$1,196 USD
View
C
Retailer 20
-
$1,199 USD
€1,142 EUR
View
C
Retailer 21
-
$1,370 USD
CA$1,903 CAD
View
Most Expensive
C
MOH London
E1ED5DAB9 · Oct 29
$1,567 USD
£1,234 GBP
View
21 more retailers have this diamond
Prices start from $659 USDSave up to $908 USD

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
$659 USD