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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 £4,458 GBP
$5,936 USD
As of October 28, 2026
Save £3,082 GBP (41%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £8,548 GBP 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 28
Current: £7,540 GBP|Low: £3,343 GBP|High: £7,620 GBP|Avg: £5,096 GBP
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£3,343 GBP
Retailer 4£4,458 GBP
Retailer 10£4,527 GBP
Retailer 3£4,717 GBP
Retailer 9£4,752 GBP
Retailer 7£5,160 GBP
Retailer 6£5,231 GBP
Retailer 8£5,468 GBP
Retailer 5£5,897 GBP
Retailer 1£7,540 GBP

9 data points across 10 retailers

8 retailers£4,458 GBP to £7,540 GBP

B+
Cheapest Retailer
-
£4,458 GBP
$5,936 USD
B+
Retailer 2
-
£4,527 GBP
€5,742 EUR
View
B+
Retailer 3
-
£4,717 GBP
$6,282 USD
View
Final sale: no returns
B
Retailer 4
-
£5,111 GBP
$6,806 USD
View
Price last confirmed 30 days ago
B
Retailer 5
-
£5,231 GBP
$6,966 USD
View
B
Retailer 6
-
£5,897 GBP
$7,853 USD
View
Price last confirmed 30 days ago
B
Retailer 7
-
£7,540 GBP
View
Most Expensive
C
NZ Jewellers
af77280b-8008-485c-83da-35f99d62dcfc · Sep 30
£8,548 GBP
$11,383 USD
View
Price last confirmed 29 days ago
7 more retailers have this diamond
Prices start from £4,458 GBPSave up to £3,082 GBP

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
£4,458 GBP