CaratHunter
Plans
Heart|Natural|GIA

0.51ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 5231856783

Certificate GIA 5231856783

Diamond specifications and retailer prices

From $674 CAD
As of November 5, 2026
Save $1,906 CAD (74%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,580 CAD at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231856783. Listed at 11 retailers as of November 5, 2026, with prices from $674 to $2,580, a $1,906 spread on the same certified stone. NZ Jewellers lists it at $2,580. 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
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5231856783
Dimensions4.69 × 5.47 × 3.40 mm
L/W Ratio1.17
Top View
4.69 mm5.47 mm0.51 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceMedium
CertificateGIA 5231856783
Side View
Table 55.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.0%

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 5
Current: $2,580 CAD|Low: $674 CAD|High: $2,580 CAD|Avg: $1,061 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10$674 CAD
Retailer 9$724 CAD
Retailer 11$744 CAD
Retailer 4$769 CAD
Retailer 5$771 CAD
Retailer 2$813 CAD
Retailer 3$876 CAD
Retailer 8$964 CAD
Retailer 6$1,044 CAD
Retailer 7$1,551 CAD
NZ Jewellers$2,580 CAD

45 data points across 11 retailers

11 retailers$674 CAD to $2,580 CAD

A
Cheapest Retailer
-
$674 CAD
B+
Retailer 2
-
$724 CAD
View
B+
Retailer 3
-
$769 CAD
View
B+
Retailer 4
-
$771 CAD
View
B+
Retailer 5
-
$813 CAD
View
B
Retailer 6
-
$876 CAD
View
B
Retailer 7
-
$911 CAD
View
B
Retailer 8
-
$964 CAD
View
B
Retailer 9
-
$1,044 CAD
View
B
Retailer 10
-
$1,551 CAD
View
Most Expensive
C
NZ Jewellers
31f6a0a0-52ac-48c8-8fcf-10c7aa63085e · Nov 5
$2,580 CAD
$1,834 USD
View
10 more retailers have this diamond
Prices start from $674 CADSave up to $1,906 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
$674 CAD