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Oval|Natural|GIA

0.51ct F SI1 Oval Natural Diamond

EX • F/SI1 • GIA 1553375957

Certificate GIA 1553375957

Diamond specifications and retailer prices

From $777 AUD
As of November 5, 2026
Save $688 AUD (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,465 AUD at Frank Darling · As of November 6, 2026
View at Frank Darling

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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553375957. Listed at 11 retailers as of November 5, 2026, with prices from $777 to $1,465, a $688 spread on the same certified stone. Frank Darling lists it at $1,465. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle37.75°
OriginNatural
Grading LabGIA
CertificateGIA 1553375957
Dimensions6.82 × 4.35 × 2.62 mm
L/W Ratio1.57
Culet sizeNone
Top View
6.82 mm4.35 mm0.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1553375957
Side View
Table 60.0%Crown 38.5°Girdle: THN-VTKPavilion 37.75°Culet: NoneDepth 60.1%

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 5
Current: $1,465 AUD|Low: $773 AUD|High: $1,534 AUD|Avg: $1,132 AUD|-4.5%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 4$777 AUD
Retailer 10$846 AUD
Retailer 8$913 AUD
Retailer 3$981 AUD
Retailer 5$1,100 AUD
Retailer 7$1,185 AUD
Retailer 6$1,189 AUD
Retailer 2$1,241 AUD
Retailer 9$1,276 AUD
Frank Darling$1,465 AUD

32 data points across 10 retailers

11 retailers$777 AUD to $1,465 AUD

A
Cheapest Retailer
-
$777 AUD
A
Retailer 2
-
$846 AUD
View
A
Retailer 3
-
$913 AUD
View
A
Retailer 4
-
$981 AUD
View
B+
Retailer 5
-
$1,093 AUD
View
B+
Retailer 6
-
$1,100 AUD
View
B+
Retailer 7
-
$1,185 AUD
View
B+
Retailer 8
-
$1,189 AUD
View
B+
Retailer 9
-
$1,241 AUD
View
B+
Retailer 10
-
$1,276 AUD
View
Most Expensive
B+
Frank Darling
2649521HK · Nov 6
$1,465 AUD
$1,007 USD
View
10 more retailers have this diamond
Prices start from $777 AUDSave up to $688 AUD

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
$777 AUD