Heart|Natural|HRD

1.51ct E SI2 Heart Natural Diamond

GD • E/SI2 • HRD 170003051950

Certificate HRD 170003051950

Diamond specifications and retailer prices

From $5,936 USD
As of October 28, 2026
Save $4,105 USD (41%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $11,383 USD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by HRD 170003051950. Listed at 8 retailers as of October 26, 2026, with a 69% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.51
Carat
E
Color
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabHRD
CertificateHRD 170003051950
Dimensions6.58 × 7.56 × 4.23 mm
L/W Ratio1.15
Girdle conditionFaceted
Top View
6.58 mm7.56 mm1.51 ctE / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateHRD 170003051950
Side View
Table 60.0%CrownGirdle: Extremely ThickPavilionCulet: NoneDepth 56.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $10,041 USD|Low: $4,452 USD|High: $10,147 USD|Avg: $6,786 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 25, 2026
Retailer 2$4,452 USD
Retailer 4$5,936 USD
Retailer 10$6,029 USD
Retailer 3$6,282 USD
Retailer 9$6,328 USD
Retailer 7$6,871 USD
Retailer 6$6,966 USD
Retailer 8$7,282 USD
Retailer 5$7,853 USD
Retailer 1$10,041 USD

9 data points across 10 retailers

8 retailers$5,936 USD to $10,041 USD

B+
Cheapest Retailer
-
$5,936 USD
B+
Retailer 2
-
$6,029 USD
€5,742 EUR
View
B+
Retailer 3
-
$6,282 USD
View
Final sale: no returns
B
Retailer 4
-
$6,806 USD
View
Price last confirmed 30 days ago
B
Retailer 5
-
$6,966 USD
View
B
Retailer 6
-
$7,853 USD
View
Price last confirmed 30 days ago
B
Retailer 7
-
$10,041 USD
£7,906 GBP
View
Most Expensive
C
NZ Jewellers
af77280b-8008-485c-83da-35f99d62dcfc · Sep 30
$11,383 USD
View
Price last confirmed 29 days ago
7 more retailers have this diamond
Prices start from $5,936 USDSave up to $4,105 USD

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.

B+
1.51ct Heart
$5,936 USD