Radiant|Lab Grown|IGI

1.71ct E FL Radiant Lab Grown Diamond

EX • E/FL • IGI LG799677097

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG799677097

Diamond specifications and retailer prices

From £621 GBP

HK$6,500 HKD

As of October 30, 2026

Save £3,073 GBP (83%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: £3,694 GBP at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 1.71ct lab-grown radiant diamond

This 1.71ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG799677097 or 799677097. Listed at 14 retailers as of October 29, 2026, with prices from £621 to £3,694, a £3,073 spread on the same certified stone. Brilliant Earth lists it at £3,694. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.71

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle46.6°

Pavilion angle34.1°

OriginLab Grown

Grading LabIGI

CertificateIGI LG799677097

Dimensions8.76 × 5.86 × 3.78 mm

L/W Ratio1.49

Cert comments

As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG799677097

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 30

Current: £3,694 GBP|Low: £621 GBP|High: £3,717 GBP|Avg: £1,846 GBP|-0.6%

Brilliant Earth

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

October 30, 2026

Retailer 9£621 GBP

Retailer 11£727 GBP

Retailer 8£856 GBP

Retailer 13£865 GBP

Retailer 2£885 GBP

Retailer 7£971 GBP

Retailer 5£998 GBP

Retailer 10£1,027 GBP

Retailer 4£1,784 GBP

Retailer 3£1,803 GBP

Retailer 12£1,827 GBP

Retailer 6£2,466 GBP

Brilliant Earth£3,694 GBP

43 data points across 13 retailers

14 retailers£621 GBP to £3,694 GBP

Cheapest Retailer

£621 GBP

HK$6,500 HKD

Retailer 2

£727 GBP

$974 USD

View

Retailer 3

£856 GBP

€1,092 EUR

View

Price last confirmed 8 days ago

Retailer 4

£865 GBP

$1,159 USD

View

Retailer 5

£885 GBP

View

B+

Retailer 6

£971 GBP

ZAR 21,022 ZAR

View

Retailer 7

£998 GBP

$1,337 USD

View

Price last confirmed 14 days ago

B+

Retailer 8

£1,027 GBP

$1,376 USD

View

B+

Retailer 9

£1,716 GBP

$2,299 USD

View

B+

Retailer 10

£1,784 GBP

SGD 3,230 SGD

View

B+

Retailer 11

£1,803 GBP

$2,416 USD

View

Retailer 12

£1,827 GBP

$2,447 USD

View

Retailer 13

£2,466 GBP

View

Most Expensive

Brilliant Earth

20719617A · Oct 29

£3,694 GBP

$4,950 USD

View

13 more retailers have this diamond

Prices start from £621 GBPSave up to £3,073 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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