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Round|Natural|GIA

0.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 7553746149

Certificate GIA 7553746149

Diamond specifications and retailer prices

From HK$5,275 HKD
As of November 4, 2026
Save HK$6,278 HKD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$19,813 HKD at NZ Jewellers · As of September 23, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7553746149. Listed at 18 retailers as of November 4, 2026, with a 119% 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7553746149
Dimensions5.13 × 5.16 × 3.15 mm
L/W Ratio1.01
Culet sizeNone
Top View
5.13 mm5.16 mm0.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7553746149
Side View
Table 58.0%CrownGirdle: Med. - Sli. ThickPavilionCulet: NoneDepth 61.2%

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$7,963 HKD|Low: HK$4,836 HKD|High: HK$15,675 HKD|Avg: HK$8,636 HKD|+1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 7HK$5,275 HKD
Retailer 8HK$5,619 HKD
Retailer 6HK$5,721 HKD
Retailer 3HK$7,485 HKD
Retailer 1HK$7,963 HKD
Retailer 2HK$8,856 HKD
Retailer 4HK$11,552 HKD
Retailer 5HK$15,620 HKD

42 data points across 8 retailers

18 retailersHK$5,275 HKD to HK$11,552 HKD

A
Cheapest Retailer
-
HK$5,275 HKD
Final sale: no returns
B+
Retailer 2
-
HK$5,619 HKD
View
Retailer 3
-
HK$5,721 HKD
View
Price last confirmed 8 days ago
Retailer 4
-
HK$5,721 HKD
View
Price last confirmed 29 days ago
Retailer 5
-
HK$5,721 HKD
View
Price last confirmed 60 days ago
Retailer 6
-
HK$5,941 HKD
View
Price last confirmed 15 days ago
Retailer 7
-
HK$5,941 HKD
View
Price last confirmed 38 days ago
B+
Retailer 8
-
HK$6,552 HKD
View
Retailer 9
-
HK$6,607 HKD
View
Price last confirmed 53 days ago
Retailer 10
-
HK$6,607 HKD
View
Price last confirmed 44 days ago
Retailer 11
-
HK$6,607 HKD
View
Price last confirmed 60 days ago
B+
Retailer 12
-
HK$7,485 HKD
View
B
Retailer 13
-
HK$7,963 HKD
View
B
Retailer 14
-
HK$8,856 HKD
View
B
Retailer 15
-
HK$11,552 HKD
View
Retailer 16
-
HK$15,620 HKD
View
Price last confirmed 9 days ago
Retailer 17
-
HK$19,813 HKD
View
Price under review
Most Expensive
NZ Jewellers
da7f7d1e-7845-44d1-a0cb-83f959df6e4b · Sep 23
HK$19,813 HKD
$2,528 USD
View
Price under review
17 more retailers have this diamond
Prices start from HK$5,275 HKDSave up to HK$6,278 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$5,275 HKD