Princess|Lab Grown|IGI

2.57ct D FL Princess Lab Grown Diamond

EX • D/FL • IGI LG831603936

Shape and cutting style on the report: Princess cut

Certificate IGI LG831603936

Diamond specifications and retailer prices

From £1,490 GBP

$1,996 USD

As of October 30, 2026

Save £5,802 GBP (80%) vs most expensive(unlock to see where)

23 retailers carry this diamond

Most expensive: £7,292 GBP at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 2.57ct lab-grown princess diamond

This 2.57ct lab-grown princess sits in the two to three carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG831603936 or 831603936. Listed at 23 retailers as of October 30, 2026, with prices from £1,490 to £7,292, a £5,802 spread on the same certified stone. Brilliant Earth lists it at £7,292. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.57

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle41.8°

Pavilion angle38.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG831603936

Dimensions7.49 × 7.49 × 5.32 mm

L/W Ratio1.00

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 LG831603936

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: £7,292 GBP|Low: £1,490 GBP|High: £8,977 GBP|Avg: £4,467 GBP|+1.6%

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

Retailer 14

Retailer 15

Retailer 16

Retailer 17

Retailer 18

Retailer 19

Retailer 20

Retailer 21

November 1, 2026

Retailer 21£1,490 GBP

Retailer 5£1,667 GBP

Retailer 8£1,729 GBP

Retailer 18£1,813 GBP

Retailer 12£1,997 GBP

Retailer 6£2,075 GBP

Retailer 3£2,215 GBP

Retailer 16£2,376 GBP

Retailer 15£2,377 GBP

Retailer 17£2,464 GBP

Retailer 13£2,502 GBP

Retailer 9£3,276 GBP

Retailer 7£3,888 GBP

Retailer 10£4,459 GBP

Retailer 4£4,459 GBP

Retailer 2£4,935 GBP

Retailer 19£5,168 GBP

Retailer 11£5,773 GBP

Retailer 14£6,048 GBP

Retailer 20£6,324 GBP

Brilliant Earth£7,292 GBP

34 data points across 21 retailers

23 retailers£1,490 GBP to £7,292 GBP

Cheapest Retailer

£1,490 GBP

$1,996 USD

Retailer 2

£1,664 GBP

$2,230 USD

View

Price last confirmed 40 days ago

Retailer 3

£1,667 GBP

$2,234 USD

View

Final sale: no returns

Retailer 4

£1,729 GBP

$2,316 USD

View

Retailer 5

£1,813 GBP

$2,429 USD

View

Retailer 6

£1,997 GBP

HK$20,900 HKD

View

Retailer 7

£2,075 GBP

$2,780 USD

View

Retailer 8

£2,215 GBP

$2,968 USD

View

Retailer 9

£2,376 GBP

$3,183 USD

View

Retailer 10

£2,377 GBP

View

Retailer 11

£2,443 GBP

$3,273 USD

View

Price last confirmed 20 days ago

Retailer 12

£2,464 GBP

$3,301 USD

View

Retailer 13

£2,502 GBP

$3,352 USD

View

B+

Retailer 14

£3,276 GBP

View

B+

Retailer 15

£3,888 GBP

€4,962 EUR

View

B+

Retailer 16

£4,459 GBP

$5,974 USD

View

B+

Retailer 17

£4,459 GBP

ZAR 96,516 ZAR

View

B+

Retailer 18

£4,935 GBP

View

Retailer 19

£5,168 GBP

$6,925 USD

View

Retailer 20

£5,773 GBP

SGD 10,453 SGD

View

Retailer 21

£6,048 GBP

$8,103 USD

View

Retailer 22

£6,324 GBP

$8,474 USD

View

Most Expensive

Brilliant Earth

21583841A · Oct 31

£7,292 GBP

$9,770 USD

View

22 more retailers have this diamond

Prices start from £1,490 GBPSave up to £5,802 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

2.57ct Princess

£1,490 GBP