Oval|Natural|GIA

0.51ct F SI1 Oval Natural Diamond

GD • F/SI1 • GIA 2557293700

Certificate GIA 2557293700

Diamond specifications and retailer prices

From HK$5,126 HKD
As of November 6, 2026
Save HK$7,704 HKD (60%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$17,423 HKD at NZ Jewellers · As of September 30, 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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2557293700. Listed at 15 retailers as of November 1, 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
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557293700
Dimensions7.10 × 4.35 × 2.64 mm
L/W Ratio1.63
Key to symbols
Cloud, Feather, Crystal
Top View
7.10 mm4.35 mm0.51 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557293700
Side View
Table 58.0%CrownGirdlePavilionCulet: NoneDepth 60.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: HK$7,845 HKD|Low: HK$4,695 HKD|High: HK$12,987 HKD|Avg: HK$7,041 HKD|+1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8HK$5,126 HKD
Retailer 10HK$5,314 HKD
Retailer 11HK$5,345 HKD
Retailer 3HK$5,557 HKD
Retailer 4HK$5,557 HKD
Retailer 2HK$6,411 HKD
Retailer 5HK$6,756 HKD
Retailer 12HK$6,975 HKD
Retailer 1HK$7,845 HKD
Retailer 9HK$8,355 HKD
Retailer 6HK$8,574 HKD
Retailer 7HK$12,830 HKD

42 data points across 12 retailers

15 retailersHK$5,126 HKD to HK$12,830 HKD

B+
Cheapest Retailer
-
HK$5,126 HKD
Final sale: no returns
B+
Retailer 2
-
HK$5,314 HKD
View
Retailer 3
-
HK$5,557 HKD
View
Price last confirmed 30 days ago
Retailer 4
-
HK$5,557 HKD
View
Price last confirmed 30 days ago
Retailer 5
-
HK$5,768 HKD
View
Price last confirmed 39 days ago
Retailer 6
-
HK$6,411 HKD
View
Price last confirmed 39 days ago
B
Retailer 7
-
HK$6,583 HKD
View
B
Retailer 8
-
HK$6,591 HKD
View
B
Retailer 9
-
HK$6,756 HKD
View
B
Retailer 10
-
HK$6,975 HKD
View
B
Retailer 11
-
HK$7,845 HKD
View
Retailer 12
-
HK$8,355 HKD
View
Price last confirmed 34 days ago
B
Retailer 13
-
HK$8,574 HKD
View
B
Retailer 14
-
HK$12,830 HKD
View
Most Expensive
NZ Jewellers
71cc3dde-595c-41e9-a2c4-aafdcb9acb2c · Sep 30
HK$17,423 HKD
$2,223 USD
View
Price under review
14 more retailers have this diamond
Prices start from HK$5,126 HKDSave up to HK$7,704 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.

B+
0.51ct Oval
HK$5,126 HKD