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Heart|Natural|GIA

0.51ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 6525123597

Certificate GIA 6525123597

Diamond specifications and retailer prices

From $625 CAD
As of November 6, 2026
Save $1,335 CAD (68%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,675 CAD at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6525123597. Listed at 20 retailers as of November 6, 2026, with a 214% 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6525123597
Dimensions4.90 × 5.40 × 3.20 mm
L/W Ratio1.10
Top View
4.90 mm5.40 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6525123597
Side View
Table 57.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 59.3%

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: $2,675 CAD|Low: $625 CAD|High: $2,675 CAD|Avg: $1,210 CAD
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 7, 2026
Retailer 8$625 CAD
Retailer 6$786 CAD
Retailer 13$852 CAD
Retailer 4$919 CAD
Retailer 12$919 CAD
Retailer 14$985 CAD
Retailer 7$1,038 CAD
Retailer 9$1,041 CAD
Retailer 3$1,068 CAD
Retailer 5$1,118 CAD
Retailer 10$1,252 CAD
Retailer 11$1,317 CAD
Retailer 2$1,959 CAD
NZ Jewellers$2,675 CAD

30 data points across 14 retailers

20 retailers$625 CAD to $1,959 CAD

A
Cheapest Retailer
-
$625 CAD
B+
Retailer 2
-
$786 CAD
View
Final sale: no returns
B+
Retailer 3
-
$807 CAD
View
B+
Retailer 4
-
$852 CAD
View
Retailer 5
-
$919 CAD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$919 CAD
View
B
Retailer 7
-
$985 CAD
View
B
Retailer 8
-
$1,007 CAD
View
B
Retailer 9
-
$1,038 CAD
View
B
Retailer 10
-
$1,038 CAD
View
B
Retailer 11
-
$1,041 CAD
View
B
Retailer 12
-
$1,068 CAD
View
B
Retailer 13
-
$1,118 CAD
View
B
Retailer 14
-
$1,179 CAD
View
B
Retailer 15
-
$1,252 CAD
View
Retailer 16
-
$1,281 CAD
View
Price last confirmed 34 days ago
B
Retailer 17
-
$1,317 CAD
View
B
Retailer 18
-
$1,959 CAD
View
Retailer 19
-
$2,675 CAD
View
Price under review
Most Expensive
NZ Jewellers
8caf3824-5d87-4169-9d05-c92e3f72514f · Oct 18
$2,675 CAD
$1,902 USD
View
Price under review
19 more retailers have this diamond
Prices start from $625 CADSave up to $1,335 CAD

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
$625 CAD