Radiant|Natural|GIA

1.50ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 1555573256

Certificate GIA 1555573256

Diamond specifications and retailer prices

From £4,557 GBP

SGD 8,251 SGD

As of October 31, 2026

Save £6,261 GBP (58%) vs most expensive(unlock to see where)

25 retailers carry this diamond

Most expensive: £10,818 GBP at 77 Diamonds · As of November 2, 2026

View at 77 Diamonds

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded G 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 1555573256. Listed at 25 retailers as of October 31, 2026, with prices from £4,557 to £10,818, a £6,261 spread on the same certified stone. 77 Diamonds lists it at £10,818. 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

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishExcellent

SymmetryVery Good

FluorescenceNone

OriginNatural

Grading LabGIA

CertificateGIA 1555573256

Dimensions7.66 × 5.72 × 3.86 mm

L/W Ratio1.34

Girdle conditionPolished

Culet sizeNone

Key to symbols

Cloud, Feather, Crystal, Needle

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryVery Good

FluorescenceNone

CertificateGIA 1555573256

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31

Current: £10,818 GBP|Low: £4,122 GBP|High: £10,818 GBP|Avg: £5,870 GBP|+116.0%

77 Diamonds

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 14£4,122 GBP

Retailer 6£4,557 GBP

Retailer 7£4,790 GBP

Retailer 8£5,089 GBP

Retailer 17£5,189 GBP

Retailer 9£5,269 GBP

Retailer 3£5,629 GBP

Retailer 15£5,988 GBP

Retailer 13£6,009 GBP

Retailer 5£6,299 GBP

Retailer 4£7,686 GBP

Retailer 12£7,749 GBP

Retailer 2£8,236 GBP

Retailer 16£8,679 GBP

Retailer 10£8,719 GBP

Retailer 11£8,776 GBP

77 Diamonds£10,818 GBP

26 data points across 17 retailers

25 retailers£4,557 GBP to £10,818 GBP

Retailer 1

£3,859 GBP

HK$40,400 HKD

Price last confirmed 12 days ago

Retailer 2

£4,122 GBP

₹525,993 INR

View

Price last confirmed 12 days ago

Retailer 3

£4,321 GBP

$5,789 USD

View

Price last confirmed 18 days ago

Retailer 4

£4,441 GBP

SGD 8,042 SGD

View

Price last confirmed 19 days ago

Retailer 5

£4,557 GBP

SGD 8,251 SGD

View

B+

Retailer 6

£4,738 GBP

$6,348 USD

View

Retailer 7

£4,739 GBP

$6,350 USD

View

Price last confirmed 11 days ago

Retailer 8

£4,790 GBP

$6,418 USD

View

Price last confirmed 17 days ago

Retailer 9

£5,089 GBP

A$10,491 AUD

View

Price last confirmed 29 days ago

Retailer 10

£5,189 GBP

$6,953 USD

View

Price last confirmed 13 days ago

Retailer 11

£5,269 GBP

$7,060 USD

View

Price last confirmed 16 days ago

B+

Retailer 12

£5,287 GBP

A$10,898 AUD

View

Retailer 13

£5,309 GBP

$7,114 USD

View

Price last confirmed 15 days ago

Retailer 14

£5,398 GBP

$7,233 USD

View

Price last confirmed 13 days ago

Retailer 15

£5,988 GBP

$8,023 USD

View

Price last confirmed 12 days ago

Retailer 16

£6,299 GBP

ZAR 136,357 ZAR

View

Price last confirmed 15 days ago

Retailer 17

£6,431 GBP

$8,617 USD

View

Price last confirmed 62 days ago

Retailer 18

£7,686 GBP

View

Price last confirmed 12 days ago

Retailer 19

£7,749 GBP

View

Price last confirmed 11 days ago

Retailer 20

£8,236 GBP

$11,035 USD

View

Retailer 21

£8,679 GBP

$11,629 USD

View

Price last confirmed 12 days ago

Retailer 22

£8,719 GBP

$11,683 USD

View

Retailer 23

£8,776 GBP

$11,759 USD

View

Retailer 24

£8,839 GBP

A$18,220 AUD

View

Most Expensive

77 Diamonds

RADZ3QGUKXE8 · Nov 2

£10,818 GBP

View

24 more retailers have this diamond

Prices start from £4,557 GBPSave up to £6,261 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

1.50ct Radiant

£4,557 GBP