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Oval|Natural|GIA

0.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 6555499715

Certificate GIA 6555499715

Diamond specifications and retailer prices

From HK$4,287 HKD
As of November 6, 2026
Save HK$6,427 HKD (60%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$14,578 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555499715. Listed at 15 retailers as of November 4, 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. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555499715
Dimensions6.50 × 4.50 × 2.77 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
6.50 mm4.50 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555499715
Side View
Table 56.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 61.5%

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 6
Current: HK$6,834 HKD|Low: HK$4,287 HKD|High: HK$10,863 HKD|Avg: HK$6,701 HKD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6HK$4,287 HKD
Retailer 8HK$5,133 HKD
Retailer 2HK$5,651 HKD
Retailer 5HK$6,152 HKD
Retailer 1HK$6,834 HKD
Retailer 7HK$6,991 HKD
Retailer 4HK$7,171 HKD
Retailer 3HK$10,714 HKD

46 data points across 8 retailers

15 retailersHK$4,287 HKD to HK$10,714 HKD

A
Cheapest Retailer
-
HK$4,287 HKD
Final sale: no returns
Retailer 2
-
HK$4,648 HKD
View
Price last confirmed 29 days ago
Retailer 3
-
HK$5,008 HKD
View
Price last confirmed 29 days ago
Retailer 4
-
HK$5,008 HKD
View
Price last confirmed 38 days ago
Retailer 5
-
HK$5,016 HKD
View
Price last confirmed 11 days ago
Retailer 6
-
HK$5,361 HKD
View
Price last confirmed 67 days ago
Retailer 7
-
HK$5,361 HKD
View
Price last confirmed 38 days ago
B+
Retailer 8
-
HK$5,651 HKD
View
B
Retailer 9
-
HK$6,152 HKD
View
B+
Retailer 10
-
HK$6,834 HKD
View
Retailer 11
-
HK$6,991 HKD
View
Price last confirmed 33 days ago
B+
Retailer 12
-
HK$7,171 HKD
View
B
Retailer 13
-
HK$10,714 HKD
View
Retailer 14
-
HK$14,578 HKD
View
Price last confirmed 69 days ago
Most Expensive
NZ Jewellers
14c792f6-0078-4d74-b977-0c16cc58ec11 · Sep 30
HK$14,578 HKD
$1,860 USD
View
Price last confirmed 37 days ago
14 more retailers have this diamond
Prices start from HK$4,287 HKDSave up to HK$6,427 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$4,287 HKD