Heart|Natural|GIA

1.51ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 2235518191

Certificate GIA 2235518191

Diamond specifications and retailer prices

From £2,367 GBP

$3,171 USD

As of November 1, 2026

Save £2,684 GBP (53%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: £5,130 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2235518191. Listed at 17 retailers as of October 29, 2026, with a 113% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51

Carat

Colour

SI2

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishGood

SymmetryGood

FluorescenceNone

OriginNatural

Grading LabGIA

CertificateGIA 2235518191

Dimensions7.29 × 7.67 × 4.09 mm

L/W Ratio1.05

Culet sizeNone

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishGood

SymmetryGood

FluorescenceNone

CertificateGIA 2235518191

Side View

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 1

Current: £3,398 GBP|Low: £1,934 GBP|High: £5,084 GBP|Avg: £2,915 GBP|+7.3%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

November 2, 2026

Retailer 11£1,934 GBP

Retailer 2£2,329 GBP

Retailer 8£2,367 GBP

Retailer 7£2,417 GBP

Retailer 6£2,512 GBP

Retailer 3£2,667 GBP

Retailer 9£2,772 GBP

Retailer 4£3,073 GBP

Retailer 1£3,398 GBP

Retailer 10£3,400 GBP

Retailer 5£5,051 GBP

42 data points across 11 retailers

17 retailers£2,367 GBP to £5,051 GBP

Retailer 1

£2,263 GBP

$3,032 USD

Price last confirmed 26 days ago

B+

Retailer 2

£2,367 GBP

$3,171 USD

View

B+

Retailer 3

£2,417 GBP

$3,238 USD

View

B+

Retailer 4

£2,512 GBP

$3,366 USD

View

Final sale: no returns

Retailer 5

£2,667 GBP

$3,574 USD

View

Price last confirmed 25 days ago

Retailer 6

£2,667 GBP

$3,574 USD

View

Price last confirmed 25 days ago

Retailer 7

£2,671 GBP

$3,579 USD

View

Price last confirmed 26 days ago

Retailer 8

£2,770 GBP

$3,711 USD

View

Price last confirmed 32 days ago

B+

Retailer 9

£2,772 GBP

$3,714 USD

View

Retailer 10

£3,073 GBP

View

Retailer 11

£3,078 GBP

$4,124 USD

View

Price last confirmed 56 days ago

Retailer 12

£3,078 GBP

$4,124 USD

View

Price last confirmed 34 days ago

Retailer 13

£3,398 GBP

€4,336 EUR

View

Retailer 14

£3,400 GBP

$4,556 USD

View

Price last confirmed 10 days ago

Retailer 15

£4,254 GBP

$5,701 USD

View

Price last confirmed 25 days ago

Retailer 16

£5,051 GBP

View

Most Expensive

NZ Jewellers

7a9a62d6-a97d-4169-b6cc-b6d427851887 · Sep 30

£5,130 GBP

$6,873 USD

View

Price last confirmed 32 days ago

16 more retailers have this diamond

Prices start from £2,367 GBPSave up to £2,684 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.

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1.51ct Heart

£2,367 GBP