Radiant|Lab Grown|IGI

1.64ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG600377774

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

Certificate IGI LG600377774

Diamond specifications and retailer prices

From £240 GBP

$322 USD

As of October 30, 2026

Save £2,073 GBP (90%) vs most expensive(unlock to see where)

25 retailers carry this diamond

Most expensive: £2,314 GBP at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 1.64ct lab-grown radiant diamond

This 1.64ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG600377774 or 600377774. Listed at 25 retailers as of October 29, 2026, with prices from £240 to £2,314, a £2,073 spread on the same certified stone. Brilliant Earth lists it at £2,314. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.64

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle41.2°

Pavilion angle32°

OriginLab Grown

Grading LabIGI

CertificateIGI LG600377774

Dimensions9.06 × 5.84 × 3.68 mm

L/W Ratio1.55

Culet sizePointed

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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG600377774

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: £2,314 GBP|Low: £240 GBP|High: £2,329 GBP|Avg: £934 GBP|-0.6%

Brilliant Earth

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October 30, 2026

Retailer 6£240 GBP

Retailer 10£269 GBP

Retailer 16£279 GBP

Retailer 3£298 GBP

Retailer 21£298 GBP

Retailer 23£334 GBP

Retailer 20£414 GBP

Retailer 22£481 GBP

Retailer 11£484 GBP

Retailer 7£494 GBP

Retailer 19£512 GBP

Retailer 2£532 GBP

Retailer 18£695 GBP

Retailer 4£874 GBP

Retailer 8£884 GBP

Retailer 14£955 GBP

Retailer 24£958 GBP

Retailer 9£992 GBP

Retailer 15£1,146 GBP

Retailer 5£1,160 GBP

Retailer 12£1,182 GBP

Retailer 13£1,201 GBP

Retailer 17£1,791 GBP

Brilliant Earth£2,314 GBP

40 data points across 24 retailers

25 retailers£240 GBP to £2,314 GBP

Cheapest Retailer

£240 GBP

$322 USD

Retailer 2

£269 GBP

$360 USD

View

Final sale: no returns

Retailer 3

£279 GBP

$374 USD

View

Retailer 4

£298 GBP

$399 USD

View

Retailer 5

£298 GBP

$399 USD

View

Retailer 6

£334 GBP

HK$3,500 HKD

View

Retailer 7

£414 GBP

$555 USD

View

Retailer 8

£481 GBP

€614 EUR

View

Price last confirmed 7 days ago

Retailer 9

£484 GBP

$648 USD

View

Retailer 10

£494 GBP

$662 USD

View

Retailer 11

£512 GBP

ZAR 11,088 ZAR

View

Retailer 12

£532 GBP

View

Retailer 13

£695 GBP

A$1,432 AUD

View

Retailer 14

£874 GBP

$1,171 USD

View

B+

Retailer 15

£884 GBP

$1,185 USD

View

B+

Retailer 16

£955 GBP

SGD 1,729 SGD

View

B+

Retailer 17

£958 GBP

$1,284 USD

View

B+

Retailer 18

£992 GBP

$1,329 USD

View

B+

Retailer 19

£1,055 GBP

$1,414 USD

View

B+

Retailer 20

£1,146 GBP

$1,535 USD

View

B+

Retailer 21

£1,160 GBP

View

B+

Retailer 22

£1,182 GBP

$1,583 USD

View

B+

Retailer 23

£1,201 GBP

View

Retailer 24

£1,791 GBP

$2,400 USD

View

Price last confirmed 11 days ago

Most Expensive

Brilliant Earth

19055686A · Oct 29

£2,314 GBP

$3,100 USD

View

24 more retailers have this diamond

Prices start from £240 GBPSave up to £2,073 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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