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Heart|Natural|GIA

0.51ct H SI1 Heart Natural Diamond

GD • H/SI1 • GIA 6525215528

Certificate GIA 6525215528

Diamond specifications and retailer prices

From HK$3,033 HKD
As of November 6, 2026
Save HK$831 HKD (21%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: HK$3,864 HKD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6525215528. Listed at 4 retailers as of November 6, 2026, with prices from HK$3,033 to HK$3,864, a HK$831 spread on the same certified stone. 77 Diamonds lists it at HK$3,864. 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
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6525215528
Dimensions4.81 × 5.67 × 3.35 mm
L/W Ratio1.18
Top View
4.81 mm5.67 mm0.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6525215528
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.1%

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$3,864 HKD|Low: HK$2,876 HKD|High: HK$4,416 HKD|Avg: HK$3,482 HKD|-10.9%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 2HK$3,033 HKD
Retailer 3HK$3,151 HKD
Retailer 4HK$3,386 HKD
77 DiamondsHK$3,864 HKD

41 data points across 4 retailers

4 retailersHK$3,033 HKD to HK$3,864 HKD

A
Cheapest Retailer
-
HK$3,033 HKD
A
Retailer 2
-
HK$3,151 HKD
View
Final sale: no returns
B+
Retailer 3
-
HK$3,386 HKD
View
Most Expensive
B+
77 Diamonds
HSCPHRRPCQMU · Nov 6
HK$3,864 HKD
£388 GBP
View
3 more retailers have this diamond
Prices start from HK$3,033 HKDSave up to HK$831 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 Heart
HK$3,033 HKD