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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 HK$4,185 HKD
As of November 5, 2026
Save HK$3,706 HKD (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$7,891 HKD 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 HK$4,185 to HK$7,891, a HK$3,706 spread on the same certified stone. Frank Darling lists it at HK$7,891. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: HK$7,891 HKD|Low: HK$4,162 HKD|High: HK$8,259 HKD|Avg: HK$6,099 HKD|-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 4HK$4,185 HKD
Retailer 10HK$4,554 HKD
Retailer 8HK$4,914 HKD
Retailer 3HK$5,282 HKD
Retailer 5HK$5,925 HKD
Retailer 7HK$6,380 HKD
Retailer 6HK$6,403 HKD
Retailer 2HK$6,685 HKD
Retailer 9HK$6,873 HKD
Frank DarlingHK$7,891 HKD

32 data points across 10 retailers

11 retailersHK$4,185 HKD to HK$7,891 HKD

A
Cheapest Retailer
-
HK$4,185 HKD
A
Retailer 2
-
HK$4,554 HKD
View
A
Retailer 3
-
HK$4,914 HKD
View
A
Retailer 4
-
HK$5,282 HKD
View
B+
Retailer 5
-
HK$5,886 HKD
View
B+
Retailer 6
-
HK$5,925 HKD
View
B+
Retailer 7
-
HK$6,380 HKD
View
B+
Retailer 8
-
HK$6,403 HKD
View
B+
Retailer 9
-
HK$6,685 HKD
View
B+
Retailer 10
-
HK$6,873 HKD
View
Most Expensive
B+
Frank Darling
2649521HK · Nov 6
HK$7,891 HKD
$1,007 USD
View
10 more retailers have this diamond
Prices start from HK$4,185 HKDSave up to HK$3,706 HKD

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
HK$4,185 HKD