Radiant|Lab Grown|IGI

1.57ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG768623613

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

Certificate IGI LG768623613

Diamond specifications and retailer prices

From £248 GBP

$332 USD

As of October 30, 2026

Save £1,681 GBP (87%) vs most expensive(unlock to see where)

25 retailers carry this diamond

Most expensive: £1,929 GBP at Rare Carat · As of October 28, 2026

View at Rare Carat

About this 1.57ct lab-grown radiant diamond

This 1.57ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG768623613 or 768623613. Listed at 25 retailers as of October 28, 2026, with prices from £248 to £1,929, a £1,681 spread on the same certified stone. Rare Carat lists it at £1,929. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle38.5°

Pavilion angle33.5°

OriginLab Grown

Grading LabIGI

CertificateIGI LG768623613

Dimensions8.58 × 5.77 × 3.75 mm

L/W Ratio1.49

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 LG768623613

Side View

Caratlytics Score

How it works →

A+

Exceptional

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: £1,929 GBP|Low: £248 GBP|High: £1,963 GBP|Avg: £745 GBP|-1.7%

Rare Carat

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October 31, 2026

Retailer 6£248 GBP

Retailer 9£277 GBP

Retailer 22£287 GBP

Retailer 3£307 GBP

Retailer 10£307 GBP

Retailer 13£326 GBP

Retailer 4£334 GBP

Retailer 20£422 GBP

Retailer 24£495 GBP

Retailer 11£497 GBP

Retailer 8£501 GBP

Retailer 19£528 GBP

Retailer 2£550 GBP

Retailer 18£717 GBP

Retailer 5£815 GBP

Retailer 23£902 GBP

Retailer 15£981 GBP

Retailer 7£988 GBP

Retailer 17£1,021 GBP

Retailer 16£1,161 GBP

Retailer 12£1,194 GBP

Retailer 14£1,205 GBP

Retailer 21£1,233 GBP

Rare Carat£1,929 GBP

35 data points across 24 retailers

25 retailers£248 GBP to £1,929 GBP

A+

Cheapest Retailer

£248 GBP

$332 USD

Retailer 2

£277 GBP

$371 USD

View

Final sale: no returns

Retailer 3

£287 GBP

$385 USD

View

Retailer 4

£307 GBP

$412 USD

View

Retailer 5

£307 GBP

$412 USD

View

Retailer 6

£326 GBP

View

Retailer 7

£334 GBP

HK$3,500 HKD

View

Retailer 8

£422 GBP

$565 USD

View

Retailer 9

£495 GBP

€632 EUR

View

Price last confirmed 7 days ago

Retailer 10

£497 GBP

$666 USD

View

Retailer 11

£501 GBP

$671 USD

View

Retailer 12

£528 GBP

ZAR 11,432 ZAR

View

Retailer 13

£550 GBP

View

Retailer 14

£717 GBP

A$1,477 AUD

View

B+

Retailer 15

£815 GBP

$1,092 USD

View

B+

Retailer 16

£902 GBP

$1,208 USD

View

B+

Retailer 17

£981 GBP

SGD 1,776 SGD

View

B+

Retailer 18

£988 GBP

$1,324 USD

View

B+

Retailer 19

£1,021 GBP

$1,368 USD

View

B+

Retailer 20

£1,079 GBP

$1,446 USD

View

B+

Retailer 21

£1,161 GBP

$1,556 USD

View

B+

Retailer 22

£1,194 GBP

View

B+

Retailer 23

£1,205 GBP

$1,615 USD

View

B+

Retailer 24

£1,233 GBP

View

Most Expensive

Rare Carat

A5-163A · Oct 28

£1,929 GBP

$2,585 USD

View

24 more retailers have this diamond

Prices start from £248 GBPSave up to £1,681 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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