Radiant|Natural|GIA

1.50ct H SI1 Radiant Natural Diamond

ID • H/SI1 • GIA 1559766762

Certificate GIA 1559766762

Diamond specifications and retailer prices

From £4,335 GBP

$5,809 USD

As of November 2, 2026

Save £3,446 GBP (44%) vs most expensive(unlock to see where)

25 retailers carry this diamond

Most expensive: £8,545 GBP at NZ Jewellers · As of September 29, 2026

View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1559766762. Listed at 25 retailers as of October 28, 2026, with a 79% 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

1.50

Carat

Colour

SI1

Clarity

Ideal

Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal

PolishExcellent

SymmetryVery Good

FluorescenceFaint

OriginNatural

Grading LabGIA

CertificateGIA 1559766762

Dimensions7.88 × 5.79 × 3.98 mm

L/W Ratio1.36

Girdle conditionPolished

Culet sizeNone

Key to symbols

Crystal, Feather, Cloud, Cavity, Indented Natural

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutIdeal

PolishExcellent

SymmetryVery Good

FluorescenceFaint

CertificateGIA 1559766762

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 2

Current: £4,886 GBP|Low: £3,994 GBP|High: £7,834 GBP|Avg: £5,212 GBP|+0.3%

Retailer 1

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

November 2, 2026

Retailer 8£4,121 GBP

Retailer 9£4,248 GBP

Retailer 17£4,335 GBP

Retailer 15£4,482 GBP

Retailer 5£4,486 GBP

Retailer 2£4,530 GBP

Retailer 4£4,629 GBP

Retailer 16£4,697 GBP

Retailer 1£4,886 GBP

Retailer 11£4,973 GBP

Retailer 7£5,010 GBP

Retailer 3£5,306 GBP

Retailer 10£5,665 GBP

Retailer 6£5,743 GBP

Retailer 12£6,371 GBP

Retailer 13£7,680 GBP

Retailer 14£7,782 GBP

32 data points across 17 retailers

25 retailers£4,335 GBP to £7,782 GBP

Retailer 1

£3,802 GBP

HK$39,800 HKD

Price last confirmed 25 days ago

Retailer 2

£4,248 GBP

$5,692 USD

View

Price last confirmed 32 days ago

B+

Retailer 3

£4,335 GBP

$5,809 USD

View

Final sale: no returns

Retailer 4

£4,372 GBP

SGD 7,916 SGD

View

Price last confirmed 29 days ago

B+

Retailer 5

£4,482 GBP

$6,005 USD

View

B+

Retailer 6

£4,486 GBP

SGD 8,123 SGD

View

B+

Retailer 7

£4,530 GBP

$6,070 USD

View

B+

Retailer 8

£4,629 GBP

$6,202 USD

View

B+

Retailer 9

£4,665 GBP

$6,250 USD

View

B+

Retailer 10

£4,697 GBP

$6,294 USD

View

B+

Retailer 11

£4,886 GBP

View

B+

Retailer 12

£4,973 GBP

View

Retailer 13

£5,010 GBP

A$10,328 AUD

View

Price last confirmed 29 days ago

B+

Retailer 14

£5,044 GBP

A$10,398 AUD

View

Retailer 15

£5,109 GBP

$6,845 USD

View

Price last confirmed 32 days ago

Retailer 16

£5,188 GBP

$6,951 USD

View

Price last confirmed 32 days ago

B+

Retailer 17

£5,306 GBP

$7,110 USD

View

B+

Retailer 18

£5,665 GBP

€7,229 EUR

View

Retailer 19

£5,743 GBP

$7,695 USD

View

Price last confirmed 18 days ago

Retailer 20

£5,895 GBP

$7,898 USD

View

Price last confirmed 34 days ago

Retailer 21

£6,130 GBP

$8,213 USD

View

Price last confirmed 62 days ago

Retailer 22

£6,371 GBP

ZAR 137,909 ZAR

View

Retailer 23

£7,680 GBP

View

Retailer 24

£7,782 GBP

View

Most Expensive

NZ Jewellers

721cd6c7-4b3d-4f06-9213-ed077d3b9afb · Sep 29

£8,545 GBP

$11,449 USD

View

Price last confirmed 33 days ago

24 more retailers have this diamond

Prices start from £4,335 GBPSave up to £3,446 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.

Similar diamonds

B+

1.50ct Radiant

£4,335 GBP