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Heart|Natural|GIA

1.51ct J SI1 Heart Natural Diamond

GD • J/SI1 • GIA 7556434354

Certificate GIA 7556434354

Diamond specifications and retailer prices

From £2,519 GBP
As of November 6, 2026
Save £5,288 GBP (68%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £7,807 GBP at NZ Jewellers · As of November 3, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7556434354. Listed at 19 retailers as of November 3, 2026, with prices from £2,519 to £7,807, a £5,288 spread on the same certified stone. NZ Jewellers lists it at £7,807. 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
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7556434354
Dimensions6.92 × 8.15 × 4.81 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
6.92 mm8.15 mm1.51 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7556434354
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.0%

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: Nov 6
Current: £7,807 GBP|Low: £2,519 GBP|High: £7,807 GBP|Avg: £4,436 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 6, 2026
Retailer 2£2,519 GBP
Retailer 15£2,664 GBP
Retailer 13£2,876 GBP
Retailer 14£2,973 GBP
Retailer 7£3,074 GBP
Retailer 12£3,242 GBP
Retailer 4£3,788 GBP
Retailer 3£3,936 GBP
Retailer 9£3,952 GBP
Retailer 5£4,229 GBP
Retailer 6£4,229 GBP
Retailer 20£4,229 GBP
Retailer 16£4,433 GBP
Retailer 19£4,638 GBP
Retailer 11£4,879 GBP
Retailer 10£5,147 GBP
Retailer 8£5,182 GBP
Retailer 18£5,734 GBP
Retailer 17£6,876 GBP
NZ Jewellers£7,807 GBP

43 data points across 20 retailers

19 retailers£2,519 GBP to £7,807 GBP

B+
Cheapest Retailer
-
£2,519 GBP
B+
Retailer 2
-
£2,664 GBP
View
B+
Retailer 3
-
£2,876 GBP
View
B+
Retailer 4
-
£2,973 GBP
View
B
Retailer 5
-
£3,074 GBP
View
B
Retailer 6
-
£3,788 GBP
View
B
Retailer 7
-
£3,936 GBP
View
B
Retailer 8
-
£3,952 GBP
View
B
Retailer 9
-
£4,229 GBP
View
B
Retailer 10
-
£4,229 GBP
View
Retailer 11
-
£4,229 GBP
View
Price last confirmed 9 days ago
B
Retailer 12
-
£4,433 GBP
View
Retailer 13
-
£4,638 GBP
View
Price last confirmed 34 days ago
B
Retailer 14
-
£4,879 GBP
View
Retailer 15
-
£5,147 GBP
View
Price last confirmed 15 days ago
C
Retailer 16
-
£5,182 GBP
View
C
Retailer 17
-
£5,734 GBP
View
C
Retailer 18
-
£6,876 GBP
View
Most Expensive
C
NZ Jewellers
4c887f89-ae48-4848-b060-e48d0b93199a · Nov 3
£7,807 GBP
$10,449 USD
View
18 more retailers have this diamond
Prices start from £2,519 GBPSave up to £5,288 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
£2,519 GBP