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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 $684 SGD
As of November 5, 2026
Save $606 SGD (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,290 SGD 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 $684 to $1,290, a $606 spread on the same certified stone. Frank Darling lists it at $1,290. 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: $1,290 SGD|Low: $681 SGD|High: $1,350 SGD|Avg: $997 SGD|-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$684 SGD
Retailer 10$745 SGD
Retailer 8$804 SGD
Retailer 3$864 SGD
Retailer 5$969 SGD
Retailer 7$1,043 SGD
Retailer 6$1,047 SGD
Retailer 2$1,093 SGD
Retailer 9$1,124 SGD
Frank Darling$1,290 SGD

32 data points across 10 retailers

11 retailers$684 SGD to $1,290 SGD

A
Cheapest Retailer
-
$684 SGD
A
Retailer 2
-
$745 SGD
View
A
Retailer 3
-
$804 SGD
View
A
Retailer 4
-
$864 SGD
View
B+
Retailer 5
-
$962 SGD
View
B+
Retailer 6
-
$969 SGD
View
B+
Retailer 7
-
$1,043 SGD
View
B+
Retailer 8
-
$1,047 SGD
View
B+
Retailer 9
-
$1,093 SGD
View
B+
Retailer 10
-
$1,124 SGD
View
Most Expensive
B+
Frank Darling
2649521HK · Nov 6
$1,290 SGD
$1,007 USD
View
10 more retailers have this diamond
Prices start from $684 SGDSave up to $606 SGD

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
$684 SGD