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0.51ct H FL Round Natural Diamond

EX • H/FL • GIA 1509815203

Certificate GIA 1509815203

Diamond specifications and retailer prices

From HK$7,076 HKD
As of November 4, 2026
Save HK$16,961 HKD (71%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$24,038 HKD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 1509815203. Listed at 8 retailers as of October 30, 2026, with prices from HK$7,076 to HK$24,038, a HK$16,961 spread on the same certified stone. NZ Jewellers lists it at HK$24,038. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
H
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1509815203
Dimensions5.16 × 5.20 × 3.14 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.16 mm5.20 mm0.51 ctH / FL
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1509815203
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.7%

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 4
Current: HK$24,038 HKD|Low: HK$5,578 HKD|High: HK$24,469 HKD|Avg: HK$12,375 HKD|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 5HK$7,076 HKD
Retailer 2HK$9,163 HKD
Retailer 3HK$9,956 HKD
Retailer 6HK$10,073 HKD
Retailer 7HK$10,418 HKD
Retailer 4HK$14,012 HKD
NZ JewellersHK$24,038 HKD

31 data points across 7 retailers

8 retailersHK$7,076 HKD to HK$24,038 HKD

A
Cheapest Retailer
-
HK$7,076 HKD
Final sale: no returns
B+
Retailer 2
-
HK$9,163 HKD
View
B+
Retailer 3
-
HK$9,956 HKD
View
B+
Retailer 4
-
HK$10,073 HKD
View
B+
Retailer 5
-
HK$10,418 HKD
View
B
Retailer 6
-
HK$14,012 HKD
View
B
Retailer 7
-
HK$15,118 HKD
View
Most Expensive
B
NZ Jewellers
ae09c55e-2bc0-4d57-9fab-3cbe3d830e9b · Oct 30
HK$24,038 HKD
$3,064 USD
View
7 more retailers have this diamond
Prices start from HK$7,076 HKDSave up to HK$16,961 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 Round
HK$7,076 HKD