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Heart|Natural|HRD

1.51ct E SI2 Heart Natural Diamond

GD • E/SI2 • HRD 170003051950

Certificate HRD 170003051950

Diamond specifications and retailer prices

From $8,450 AUD
$5,936 USD
As of October 30, 2026
Save $5,843 AUD (41%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $16,205 AUD 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
Colour
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 30
Current: $14,294 AUD|Low: $6,338 AUD|High: $14,446 AUD|Avg: $9,661 AUD
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$6,338 AUD
Retailer 4$8,450 AUD
Retailer 10$8,583 AUD
Retailer 3$8,943 AUD
Retailer 9$9,009 AUD
Retailer 7$9,782 AUD
Retailer 6$9,916 AUD
Retailer 8$10,366 AUD
Retailer 5$11,180 AUD
Retailer 1$14,294 AUD

9 data points across 10 retailers

8 retailers$8,450 AUD to $14,294 AUD

B+
Cheapest Retailer
-
$8,450 AUD
$5,936 USD
B+
Retailer 2
-
$8,583 AUD
€5,742 EUR
View
B+
Retailer 3
-
$8,943 AUD
$6,282 USD
View
Final sale: no returns
Retailer 4
-
$9,689 AUD
$6,806 USD
View
Price last confirmed 31 days ago
B
Retailer 5
-
$9,916 AUD
$6,966 USD
View
Retailer 6
-
$11,180 AUD
$7,853 USD
View
Price last confirmed 31 days ago
B
Retailer 7
-
$14,294 AUD
£7,906 GBP
View
Most Expensive
NZ Jewellers
af77280b-8008-485c-83da-35f99d62dcfc · Sep 30
$16,205 AUD
$11,383 USD
View
Price last confirmed 30 days ago
7 more retailers have this diamond
Prices start from $8,450 AUDSave up to $5,843 AUD

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
$8,450 AUD