Oval|Lab Grown|IGI

1.56ct D IF Oval Lab Grown Diamond

ID • D/IF • IGI LG720508172

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG720508172

Diamond specifications and retailer prices

From £254 GBP

$341 USD

As of November 1, 2026

Save £1,940 GBP (88%) vs most expensive(unlock to see where)

30 retailers carry this diamond

Most expensive: £2,194 GBP at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 1.56ct lab-grown oval diamond

This 1.56ct lab-grown oval 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 LG720508172 or 720508172. Listed at 30 retailers as of October 31, 2026, with prices from £254 to £2,194, a £1,940 spread on the same certified stone. Brilliant Earth lists it at £2,194. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.56

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.4°

Pavilion angle40.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG720508172

Dimensions9.42 × 6.51 × 4.08 mm

L/W Ratio1.45

Girdle conditionFaceted

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 LG720508172

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: Nov 1

Current: £2,194 GBP|Low: £240 GBP|High: £3,717 GBP|Avg: £839 GBP|-41.0%

Brilliant Earth

Retailer 2

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November 1, 2026

Retailer 15£254 GBP

Retailer 10£315 GBP

Retailer 3£379 GBP

Retailer 19£384 GBP

Retailer 20£439 GBP

Retailer 18£459 GBP

Retailer 7£463 GBP

Retailer 2£468 GBP

Retailer 8£528 GBP

Retailer 9£599 GBP

Retailer 17£621 GBP

Retailer 4£795 GBP

Retailer 21£821 GBP

Retailer 11£895 GBP

Retailer 12£902 GBP

Retailer 6£1,028 GBP

Retailer 16£1,077 GBP

Retailer 5£1,102 GBP

Retailer 14£1,180 GBP

Retailer 13£1,435 GBP

Brilliant Earth£2,194 GBP

37 data points across 21 retailers

30 retailers£254 GBP to £2,194 GBP

Retailer 1

£229 GBP

$307 USD

Price last confirmed 33 days ago

Retailer 2

£250 GBP

$335 USD

View

Price last confirmed 18 days ago

Retailer 3

£254 GBP

$341 USD

View

Final sale: no returns

Retailer 4

£266 GBP

$356 USD

View

Price last confirmed 37 days ago

Retailer 5

£267 GBP

$358 USD

View

Retailer 6

£267 GBP

$358 USD

View

Price last confirmed 22 days ago

Retailer 7

£267 GBP

$358 USD

View

Price last confirmed 30 days ago

Retailer 8

£281 GBP

$376 USD

View

Price last confirmed 33 days ago

Retailer 9

£315 GBP

HK$3,300 HKD

View

Retailer 10

£379 GBP

$508 USD

View

Retailer 11

£384 GBP

$515 USD

View

Retailer 12

£439 GBP

€560 EUR

View

Retailer 13

£459 GBP

ZAR 9,936 ZAR

View

Retailer 14

£463 GBP

$620 USD

View

Retailer 15

£468 GBP

View

Retailer 16

£528 GBP

A$1,088 AUD

View

Retailer 17

£599 GBP

$803 USD

View

Retailer 18

£621 GBP

A$1,281 AUD

View

B+

Retailer 19

£795 GBP

$1,065 USD

View

B+

Retailer 20

£821 GBP

$1,100 USD

View

Retailer 21

£859 GBP

$1,151 USD

View

Price last confirmed 22 days ago

B+

Retailer 22

£895 GBP

$1,200 USD

View

B+

Retailer 23

£902 GBP

SGD 1,634 SGD

View

Retailer 24

£914 GBP

$1,224 USD

View

Price last confirmed 32 days ago

B+

Retailer 25

£1,028 GBP

$1,377 USD

View

B+

Retailer 26

£1,077 GBP

View

B+

Retailer 27

£1,102 GBP

$1,477 USD

View

B+

Retailer 28

£1,180 GBP

$1,581 USD

View

B+

Retailer 29

£1,435 GBP

A$2,959 AUD

View

Most Expensive

Brilliant Earth

15240620A · Oct 31

£2,194 GBP

$2,940 USD

View

29 more retailers have this diamond

Prices start from £254 GBPSave up to £1,940 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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