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Heart|Natural|GIA

1.51ct H IF Heart Natural Diamond

EX • H/IF • GIA 1553780704

Certificate GIA 1553780704

Diamond specifications and retailer prices

From £4,104 GBP
As of November 2, 2026
Save £2,697 GBP (40%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £6,801 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553780704. Listed at 7 retailers as of November 1, 2026, with prices from £4,104 to £6,801, a £2,697 spread on the same certified stone. MOH London lists it at £6,801. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
H
Colour
IF
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle39.61°
Pavilion angle40.04°
OriginNatural
Grading LabGIA
CertificateGIA 1553780704
Dimensions7.00 × 7.99 × 4.57 mm
L/W Ratio1.14
Girdle conditionVery Thick
Top View
7.00 mm7.99 mm1.51 ctH / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1553780704
Side View
Table 63.0%Crown 39.61°GirdlePavilion 40.04°CuletDepth 57.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £6,801 GBP|Low: £4,104 GBP|High: £7,024 GBP|Avg: £4,941 GBP|-2.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 2£4,104 GBP
Retailer 5£4,296 GBP
Retailer 6£4,419 GBP
Retailer 3£4,616 GBP
Retailer 4£4,616 GBP
Retailer 7£4,634 GBP
Retailer 8£5,159 GBP
MOH London£6,801 GBP

42 data points across 8 retailers

7 retailers£4,104 GBP to £6,801 GBP

A
Cheapest Retailer
-
£4,104 GBP
A
Retailer 2
-
£4,296 GBP
$5,765 USD
View
A
Retailer 3
-
£4,419 GBP
$5,930 USD
View
A
Retailer 4
-
£4,616 GBP
$6,194 USD
View
A
Retailer 5
-
£4,616 GBP
$6,194 USD
View
Retailer 6
-
£4,634 GBP
A$9,567 AUD
View
Price last confirmed 23 days ago
Most Expensive
B
MOH London
14B8112E5 · Nov 1
£6,801 GBP
View
6 more retailers have this diamond
Prices start from £4,104 GBPSave up to £2,697 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.

A
1.51ct Heart
£4,104 GBP