Oval|Natural|GIA

0.51ct F SI2 Oval Natural Diamond

GD • F/SI2 • GIA 5503010125

Certificate GIA 5503010125

Diamond specifications and retailer prices

From $653 USD
As of November 6, 2026
Save $980 USD (60%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,218 USD at NZ Jewellers · As of September 29, 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 F colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5503010125. Listed at 14 retailers as of November 2, 2026, with a 150% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Color
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5503010125
Dimensions6.78 × 4.46 × 2.70 mm
L/W Ratio1.52
Top View
6.78 mm4.46 mm0.51 ctF / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5503010125
Side View
Table 59.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 60.6%

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: Nov 6
Current: $840 USD|Low: $653 USD|High: $1,653 USD|Avg: $934 USD|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6$653 USD
Retailer 7$665 USD
Retailer 5$707 USD
Retailer 1$840 USD
Retailer 2$860 USD
Retailer 4$1,005 USD
Retailer 3$1,633 USD

41 data points across 7 retailers

14 retailers$653 USD to $1,633 USD

B+
Cheapest Retailer
-
$653 USD
Final sale: no returns
B+
Retailer 2
-
$665 USD
View
Retailer 3
-
$707 USD
View
Price last confirmed 29 days ago
Retailer 4
-
$707 USD
View
Price last confirmed 29 days ago
Retailer 5
-
$707 USD
View
Price last confirmed 8 days ago
Retailer 6
-
$735 USD
View
Price last confirmed 38 days ago
Retailer 7
-
$816 USD
View
Price last confirmed 38 days ago
B
Retailer 8
-
$830 USD
View
B
Retailer 9
-
$839 USD
View
B+
Retailer 10
-
$840 USD
View
B
Retailer 11
-
$860 USD
View
B
Retailer 12
-
$1,005 USD
View
B
Retailer 13
-
$1,633 USD
View
Most Expensive
NZ Jewellers
927cccfb-e227-439a-bcc2-c313e1d51fe9 · Sep 29
$2,218 USD
View
Price under review
13 more retailers have this diamond
Prices start from $653 USDSave up to $980 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
$653 USD