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Oval|Natural|GIA

0.51ct F SI1 Oval Natural Diamond

GD • F/SI1 • GIA 1519515584

Certificate GIA 1519515584

Diamond specifications and retailer prices

From HK$5,510 HKD
As of November 6, 2026
Save HK$6,858 HKD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$21,177 HKD at NZ Jewellers · As of October 20, 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 1519515584. Listed at 21 retailers as of November 2, 2026, with a 124% 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 1519515584
Dimensions6.68 × 4.55 × 2.67 mm
L/W Ratio1.47
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Crystal
Top View
6.68 mm4.55 mm0.51 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1519515584
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.7%

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$21,177 HKD|Low: HK$5,416 HKD|High: HK$21,177 HKD|Avg: HK$8,346 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 4HK$5,510 HKD
Retailer 13HK$5,518 HKD
Retailer 5HK$6,223 HKD
Retailer 12HK$6,756 HKD
Retailer 11HK$7,014 HKD
Retailer 8HK$7,759 HKD
Retailer 14HK$7,790 HKD
Retailer 3HK$8,033 HKD
Retailer 2HK$8,237 HKD
Retailer 7HK$8,731 HKD
Retailer 6HK$10,149 HKD
Retailer 9HK$10,416 HKD
Retailer 10HK$12,367 HKD
NZ JewellersHK$21,177 HKD

39 data points across 14 retailers

21 retailersHK$5,510 HKD to HK$12,367 HKD

B+
Cheapest Retailer
-
HK$5,510 HKD
B+
Retailer 2
-
HK$5,518 HKD
View
B+
Retailer 3
-
HK$6,223 HKD
View
Final sale: no returns
Retailer 4
-
HK$6,709 HKD
View
Price last confirmed 75 days ago
B
Retailer 5
-
HK$6,756 HKD
View
B
Retailer 6
-
HK$6,834 HKD
View
B
Retailer 7
-
HK$7,014 HKD
View
B
Retailer 8
-
HK$7,759 HKD
View
B
Retailer 9
-
HK$7,790 HKD
View
Retailer 10
-
HK$7,790 HKD
View
Price last confirmed 15 days ago
B
Retailer 11
-
HK$7,790 HKD
View
B
Retailer 12
-
HK$8,033 HKD
View
B
Retailer 13
-
HK$8,237 HKD
View
B
Retailer 14
-
HK$8,731 HKD
View
B
Retailer 15
-
HK$9,953 HKD
View
Retailer 16
-
HK$10,149 HKD
View
Price last confirmed 34 days ago
B
Retailer 17
-
HK$10,416 HKD
View
B
Retailer 18
-
HK$11,599 HKD
View
B
Retailer 19
-
HK$12,367 HKD
View
Retailer 20
-
HK$21,177 HKD
View
Price under review
Most Expensive
NZ Jewellers
f1577039-890a-4496-8172-06303e487764 · Oct 20
HK$21,177 HKD
$2,702 USD
View
Price under review
20 more retailers have this diamond
Prices start from HK$5,510 HKDSave up to HK$6,858 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$5,510 HKD